abductors - muscle taking a limb or the jaw away from the body.
acetyl choline - aneurotransmitter substance found at all cholinergic synapses including those of motoneurones at the neuromuscular junction.
acini - the secreting units of a gland. each acinus is a sack-like structure, lined by secreting cells. the sack opens out into a tubule.
adductors - muscle bringing a limb or the jaw towards the body.
adhesion - to form a chemical bond of attachment between two surfaces (see ligand and lectin).
adrenalin - see epinephrine.
aerobic respiration -a type of respiration which requires oxygen and in which glucose is broken down to release energy in a series of steps. the end products are carbon dioxide and water. step 1;glucose is broken down to pyruvic acid in the cell cylasm with the release of 4 hydrogen atoms. step 2; pyruvic acid is oxidised to acetylcoenzyme a (acetyl coa), with the release of 4 further hydrogen atoms. step 3; in the kreb cycle, 16 atoms of hydrogen are released. at all stages the hydrogen atoms are used to form the high energy molecule adenosine triphospate (atp) via the electron transport system . see also anaerobic respiration .
affected dentine - dentine which has been demineralised by acids in advance of invading caries bacteria. a distinction is made between affected dentine and infected dentine, because affected dentine is able to remineralise and should not be removed during cavity preparation.
aggregate - clumps or collections of small particles or bacteria .
alveolar bone - bone which develops around the roots of the teeth to hold them firmly in place. see gomphosis. if the teeth are extracted, the alveolar bone resorbs away. alveolar bone consists of both trabecula and cortical types of bone.
PCB 专业术语中英文翻译 很多PCB 的书上使用的是英文，但是大多数的人又看不懂英文， 这时候怎么办呢，我们需要翻译，但是如果每看到一个不会的词 儿就去翻译，那么就太耗费时间了，所以我们捷多邦总结了一些 常用的专业术语的中英文对照，希望能对大家有用。 1.印制电路：printed circuit 2.印制线路：printed wiring 3.印制板：printed board 4.印制板电路：printed circuit board (pcb) 5.印制线路板：printed wiring board(pwb) 6.印制元件：printed component 7.印制接点：printed contact 8.印制板装配：printed board assembly 9.板：board 1 10.表面层合电路板：surface laminar circuit (slc) 11.埋入凸块连印制板：b2it printed board 12.多层膜基板：multi-layered film substrate(mfs) 13.层间全内导通多层印制板：alivh multilayer printed board 14.载芯片板：chip on board (cob) 15.埋电阻板：buried resistance board 16.母板：mother board 17.单面印制板：single-sided printed board(ssb) 、管路敷设技术通过管线不仅可以解决吊顶层配置不规范高中资料试卷问题，而且可保障各类管路习题到位。在管路敷设过程中，要加强看护关于管路高中资料试卷连接管口处理高中资料试卷弯扁度固定盒位置保护层防腐跨接地线弯曲半径标等，要求技术交底。管线敷设技术中包含线槽、管架等多项方式，为解决高中语文电气课件中管壁薄、接口不严等问题，合理利用管线敷设技术。线缆敷设原则：在分线盒处，当不同电压回路交叉时，应采用金属隔板进行隔开处理；同一线槽内强电回路须同时切断习题电源，线缆敷设完毕，要进行检查和检测处理。、电气课件中调试对全部高中资料试卷电气设备，在安装过程中以及安装结束后进行 高中资料试卷调整试验；通电检查所有设备高中资料试卷相互作用与相互关系，根据生产工艺高中资料试卷要求，对电气设备进行空载与带负荷下高中资料试卷调控试验；对设备进行调整使其在正常工况下与过度工作下都可以正常工作；对于继电保护进行整核对定值，审核与校对图纸，编写复杂设备与装置高中资料试卷调试方案，编写重要设备高中资料试卷试验方案以及系统启动方案；对整套启动过程中高中资料试卷电气设备进行调试工作并且进行过关运行高中资料试卷技术指导。对于调试过程中高中资料试卷技术问题，作为调试人员，需要在事前掌握图纸资料、设备制造厂家出具高中资料试卷试验报告与相关技术资料，并且了解现场设备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况 ，然后根据规范与规程规定，制定设备调试高中资料试、电气设备调试高中资料试卷技术电力保护装置调试技术，电力保护高中资料试卷配置技术是指机组在进行继电保护高中资料试卷总体配置时，需要在最大限度内来确保机组高中资料试卷安全，并且尽可能地缩小故障高中资料试卷破坏范围，或者对某些异常高中资料试卷工况进行自动处理，尤其要避免错误高中资料试卷保护装置动作，并且拒绝动作，来避免不必要高中资料试卷突然停机。因此，电力高中资料试卷保护装置调试技术，要求电力保护装置做到准确灵活。对于差动保护装置高中资料试卷调试技术是指发电机一变压器组在发生内部故障时，需要进行外部电源高中资料试卷切除从而采用高中资料试卷主要保护装置。
Counter bored hole 沉孔 Chamfer 倒斜角 Fillet 倒圆角 padding block垫块 stepping bar垫条 upper die base上模座 lower die base下模座 upper supporting blank上承板 upper padding plate blank上垫板 spare dies模具备品 spring 弹簧 bolt螺栓 document folder活页夹 file folder资料夹 to put file in order整理资料 spare tools location手工备品仓 first count初盘人 first check初盘复棹人 second count 复盘人 second check复盘复核人 equipment设备 waste materials废料 work in progress product在制品 casing = containerization装箱 quantity of physical inventory second count 复盘点数量 Quantity of customs count 会计师盘,点数量 the first page第一联 filed by accounting department for reference会计部存查 end-user/using unit(department)使用单位 Summary of year-end physical inventory bills 年终盘点截止单据汇总表 bill name单据名称 This sheet and physical inventory list will be sent to accounting department together (Those of NHK will be sent to financial department) 本表请与盘点清册一起送会计部－(NHK厂区送财会部) Application status records of year-end physical inventory List and physical inventory card 年终盘点卡与清册使用－状况明细表 blank and waste sheet NO. 空白与作废单号
常用英语语法术语表 语法grammar 句法syntax 词法morphology 结构structure 层次rank 句子sentence 从句clause 词组phrase 词类part of speech 单词word 实词notional word 虚词structrural word 名词noun 专有名词proper noun 普通名词common noun 可数名词countable noun 不可数名词uncountable noun 抽象名词abstract noun 具体名词concret moun 物质名词material noun 集体名词collective noun 个体名词individual noun 介词preposition 连词conjunction 动词verb 主动词main verb 及物动词transitive verb 不及物动词intransitive verb 系动词link verb 助动词auxiliary verb 情态动词modal verb 规则动词regular verb 不规则动词irregular verb 短语动词phrasal verb 限定动词finite verb 非限定动词infinite verb 使役动词causative verb 感官动词verb of senses 动态动词event verb 静态动词state verb 感叹词exclamation 形容词adjective 副词adverb 方式副词adverb of manner 程度副词adverb of degree 时间副词adverb of time 地点副词adverb of place 修饰性副词adjunct 连接性副词conjunct 疑问副词interogative adverb 关系副词relative adverb 代词pronoun 人称代词personal pronoun 物主代词possesive pronoun 反身代词reflexive pronoun 相互代词reciprocal pronoun 指示代词demonstrative pronoun 疑问代词interrogative pronoun 关系代词relative pronoun 不定代词indefinite pronoun 物主代词possecive pronoun 名词性物主代词nominal possesive prnoun 形容词性物主代词adjectival possesive pronoun 冠词article 定冠词definite article 不定冠词indefinite article 数词numeral 基数词cardinal numeral 序数词ordinal numeral 分数词fractional numeral 形式form 单数形式singular form 复数形式plural form 限定动词finite verb form 非限定动词non-finite verb form 原形base form 从句clause 从属句subordinate clause 并列句coordinate clause 名词从句nominal clause 定语从句attributive clause
陶瓷 ceramics 合成纤维 synthetic fibre 电化学腐蚀 electrochemical corrosion 车架 automotive chassis 悬架 suspension 转向器 redirector 变速器 speed changer 板料冲压 sheet metal parts 孔加工 spot facing machining 车间 workshop 工程技术人员 engineer 气动夹紧 pneuma lock 数学模型 mathematical model 画法几何 descriptive geometry 机械制图 Mechanical drawing 投影 projection 视图 view 剖视图 profile chart 标准件 standard component 零件图 part drawing 装配图 assembly drawing 尺寸标注 size marking
技术要求 technical requirements 刚度 rigidity 内力 internal force 位移 displacement 截面 section 疲劳极限 fatigue limit 断裂 fracture 塑性变形 plastic distortion 脆性材料 brittleness material 刚度准则 rigidity criterion 垫圈 washer 垫片 spacer 直齿圆柱齿轮 straight toothed spur gear 斜齿圆柱齿轮 helical-spur gear 直齿锥齿轮 straight bevel gear 运动简图 kinematic sketch 齿轮齿条 pinion and rack 蜗杆蜗轮 worm and worm gear 虚约束 passive constraint 曲柄 crank 摇杆 racker 凸轮 cams
英语语法专业术语表达 1. Morphology 词法2．Notional Words 实义词3．Form Words 虚词4．Parts of Speech 词类5．The Noun 名词6．The Pronoun 代词7．The Numeral 数词8．The Verb 动词9．The Adjective 形容词 10. The Adverb 副词11. The Article 冠词12. The Preposition 介词 13. The conjunction 连词14. The Interjection 感叹词15. The Particle 小品词16. Word Building 构词法17. Conversion 转化18. Derivation 派生 19. Composition 合成20. Prefix 前缀21. Suffix 后缀22. Compound Words 合成词23. Classification of Nouns 名词的分类24. Common Nouns 普通名词 25. Proper Nouns 专有名词26. Countable Nouns 可数名词27. Uncountable Nouns 不可数名词28. The Singular Form 单数形式29. The Plural Form 复数形式 30. Individual Nouns个体名词31. Collective Nouns集体名词32. Material Nouns 物质名词33. Abstract Nouns抽象名词34. The Common Case普通格 35. The Possessive Case所有格36．Personal Pronouns 人称代词37. Possessive Pronouns物主代词38. Self Pronouns反身代词39. Demonstrative Pronouns指示代词40. Interrogative Pronouns疑问代词不达意41. Conjunctive Pronouns连接代词42. Relative Pronouns关系代词43. Indefinite Pronouns不定代词44. Reciprocal Pronouns相互代词45. The Subjective Case主格46. The Objective Case宾格 47. Cardinal Numerals基数词48. Ordinal Numerals 序数词49. Fractional Numerals 分数词50．Notional Verbs实意动词51. Link Verbs连系动词52. Auxiliary Verbs 助动词53. Modal Verbs情态动词54. Transitive Verbs及物动词55. Intransitive Verbs不及物动词56. Regular Verbs规则动词57. Irregular Verbs不规则动词
Steel structure 面积：area 结构形式：framework 坡度：slope 跨度：span 柱距：bay spacing 檐高：eave height 屋面板：roof system 墙面板：wall system 梁底净高: clean height 屋面系统: roof cladding 招标文件: tender doc 建筑结构结构可靠度设计统一标准: unified standard for designing of architecture construction reliablity 建筑结构荷载设计规范: load design standard for architecture construction 建筑抗震设计规范: anti-seismic design standard for architecture 钢结构设计规范: steel structure design standard 冷弯薄壁型钢结构技术规范: technical standard for cold bend and thick steel structure 门式钢架轻型房屋钢结构技术规范: technical specification for steel structure of light weight building with gabled frames 钢结构焊接规程: welding specification for steel structure 钢结构工程施工及验收规范: checking standard for constructing and checking of steel structure 压型金属板设计施工规程: design and construction specification for steel panel 荷载条件：load condition 屋面活荷载：live load on roof 屋面悬挂荷载：suspended load in roof 风荷载：wind load 雪荷载：snow load 抗震等级：seismic load 变形控制：deflect control 柱间支撑X撑：X bracing 主结构：primary structure 钢架梁柱、端墙柱: frame beam, frame column, and end-wall column 钢材牌号为Q345或相当牌号，大型钢厂出品：Q345 or equivalent, from the major steel mill 表面处理：抛丸除锈Sa2.5级，环氧富锌漆，两底两面，总厚度为125UM。表面喷涂防火材料，防火等级为：柱2小时，梁1.5小时 surface treatment: shot blasting to Sa2.5,zinc rich epoxy paint. 2primer paint and 2 finish paint .total dry film thickness 125um. Spraying fireproof painting on surface, for column 2hours and beam 1.5hours. 次结构包括：屋面檩条、围梁、门窗开口加强等，工厂轧制成C型、Z型截面，工厂预冲孔。Secondary structure included purlins, girts, roof opening and wall opening reinforcement, prepunched and rolled to C or Z section on factory machine. 材质：热浸镀锌卷材，Q345或相当牌号，大型钢厂出品或进口。Material : hot-dipped galvanized steel coil, Q345 or equivalent, from the major domestic steel mills or imported.
市场营销专业术语中英文对照标准翻译 本文为市场营销中经常用到的一些中文与英文互译的标准用语，希望对市场营销从业人员有所帮助。 《财富》杂志Fortune 案头调研Desk Research 奥美公司Ogilvy & Mather 白色商品White Goods 百乐门Parliament 百威啤酒Budweiser 包裹销售法Banded Pack 宝洁公司Procter & Gamble 宝丽来Polaroid 宝马BMW 边际成本Marginal Cost 边际收益Marginal Benefit 标准差，均差Standard Deviation 别克Buick 波立兹调查公司Alfred Politz Research, Inc 波旁王朝Ancient Age Bourbon 波特福洛分析Portefolio Analysis 产品差异Product Differentiation 产品生命周期Product Life Cycle 产品系列Product Line 产品组合Product Mix 阐述Presentation 超级市场Supermarket 成对比较法Paired Comparisons 成功的理想主义者Successful Idealist 承诺型消费者Committed Buyer 程度测试Tachistoscope 橙色商品Orange Goods 冲动购买Impulse Buying 重叠率Duplication 抽样Sampling 传销Pyramid Selling 传阅发行量Pass-on Circulation 词语联想法Word Associaton 刺激营销Incentive Marketing 促销Promotion 达彼思广告公司Ted Bates & Copany 大卫·奥格威David Ogilvy 戴比尔斯De Beers
外文翻译 英文原文 Belt Conveying Systems Development of driving system Among the methods of material conveying employed，belt conveyors play a very important part in the reliable carrying of material over long distances at competitive cost．Conveyor systems have become larger and more complex and drive systems have also been going through a process of evolution and will continue to do so．Nowadays，bigger belts require more power and have brought the need for larger individual drives as well as multiple drives such as 3 drives of 750 kW for one belt(this is the case for the conveyor drives in Chengzhuang Mine)．The ability to control drive acceleration torque is critical to belt conveyors’ performance．An efficient drive system should be able to provide smooth，soft starts while maintaining belt tensions within the specified safe limits．For load sharing on multiple drives．torque and speed control are also important consideratio ns in the drive system’s design. Due to the advances in conveyor drive control technology，at present many more reliable．Cost-effective and performance-driven conveyor drive systems cov ering a wide range of power are available for customers’ choices[1]. 1 Analysis on conveyor drive technologies 1．1 Direct drives Full-voltage starters．With a full-voltage starter design，the conveyor head shaft is direct-coupled to the motor through the gear drive．Direct full-voltage starters are adequate for relatively low-power, simple-profile conveyors．With direct fu11-voltage starters．no control is provided for various conveyor loads and．depending on the ratio between fu11- and no-1oad power requirements，empty starting times can be three or four times faster than full load．The maintenance-free starting system is simple，low-cost and very reliable．However, they cannot control starting torque and maximum stall torque；therefore．they are
组装、冲压、喷漆等专业词汇 Assembly line组装线 Layout布置图 OOBA开箱检查 fit together组装在一起 fasten锁紧(螺丝) fixture 夹具(治具) pallet栈板 barcode条码 barcode scanner条码扫描器 fuse together熔合 repair修理 operator作业员 QC quality品管 supervisor 课长 section supervisor课长 deputy section supervisor =vice section superisor副课长 ME制造工程师 MT制造生技 cosmetic inspect外观检查 inner parts inspect内部检查 thumb screw大头螺丝 lbs. inch镑、英寸 front plate前板 rear plate后板 chassis基座 bezel panel面板 power button电源按键 reset button重置键Hi-pot test of SPS高源高压测试 V oltage switch of SPS 电源电压接拉键 sheet metal parts 冲件 plastic parts塑胶件 SOP制造作业程序 material check list物料检查表 trolley台车 carton纸箱 sub-line支线 left fork叉车 personnel resource department 人力资源部 production department生产部门 planning department企划部 QC Section品管科 stamping factory冲压厂 painting factory烤漆厂 molding factory成型厂 punching machine 冲床 robot机械手 lathe车床 planer |'plein|刨床 miller铣床 grinder磨床 driller??床 linear cutting线切割 electrical sparkle电火花 welder电焊机 staker=reviting machine铆合机 position职务 president董事长 general manager总经理 special assistant manager特助 factory director厂长 department director部长 deputy manager | =vice manager副理 group leader/supervisor组长 line supervisor线长 thickness gauge厚薄规 gauge(or jig)治具 power wire电源线 buzzle蜂鸣器 defective product label不良标签 identifying sheet list标示单 iudustrial alcohol工业酒精 Tiana天那水 packaging打包 missing part漏件 wrong part错件 excessive defects过多的缺陷 critical defect极严重缺陷 major defect主要缺陷 minor defect次要缺陷 not up to standard不合规格 dimension/size is a little bigger尺寸偏 大(小) cosmetic defect外观不良 slipped screwhead/slippery screw head 螺丝滑头 speckle斑点 rust生锈 deformation变形 burr(金属)flash(塑件)毛边 poor staking铆合不良 excesssive gap间隙过大 grease/oil stains油污 inclusion杂质 painting peel off脏污 shrinking/shrinkage缩水 mixed color杂色 scratch划伤 poor processing 制程不良 poor incoming part事件不良 painting make-up补漆 discoloration羿色 water spots水渍 polishing/surface processing表面处理 exposed metal/bare metal金属裸露 lack of painting烤漆不到位 safety安全 quality品质 delivery deadline交货期 cost成本 engineering工程 die repair模修 enterprise plan = enterprise expansion projects企划 qualified products, up-to-grade products良品 defective products, not up-to-grade products不良品 to return material/stock to退料 scraped |'skræpid|报废 (be)qualfied, up to grade合格 not up to grade, not qualified不合格
冲压模具词汇 Counter bored hole 沉孔 Chamfer 倒斜角 Fillet 倒圆角 padding block垫块 stepping bar垫条 upper die base上模座 lower die base下模座 upper supporting blank上承板 upper padding plate blank上垫板 spare dies模具备品 spring 弹簧 bolt螺栓 document folder活页夹 file folder资料夹 to put file in order整理资料 spare tools location手工备品仓 first count初盘人 first check初盘复棹人 second count 复盘人 second check复盘复核人 equipment设备 waste materials废料 work in progress product在制品 casing = containerization装箱 quantity of physical inventory second count 复盘点数量 Quantity of customs count 会计师盘,点数量 the first page第一联 filed by accounting department for reference会计部存查 end-user/using unit(department)使用单位 Summary of year-end physical inventory bills 年终盘点截止单据汇总表 bill name单据名称 This sheet and physical inventory list will be sent to accounting department together (Those of NHK will be sent to financial department) 本表请与盘点清册一起送会计部－(NHK厂区送财会部) Application status records of year-end physical inventory List and physical inventory card 年终盘点卡与清册使用－状况明细表
机械专业相关词汇中英文翻译大全 单价unit price 工日合计Man-day total/work-day total 人工费cost of labor 材料费materials expenses 机械的mechanical 检查接线connection test 发电机generator 调相机phase regulator 周波cycle 减负荷装置 load-shedding equipment 断路器柜circuit breaker cabinet 单母线single busbar 互感器transformer 每相电流Current by Phase 封闭式插接close type socket joint 发电机控制面板generator control panel 分级卸载sorted unloading 同步控制synchronization control 调速器 speed governor 信号屏signal screen 继电器relay 高压柜high pressure cabinet 油浸电力变压器oil-immersed power transformer 空气断路器air circuit breaker 控制屏control panel 直流馈电屏direct current feed control panel 电容器electric condenser 计量盘metering panel 成套配电箱whole set of distribution box 落地式floor model 控制开关Control switches 铜芯电力电缆Copper core power cable 控制电缆actuating cable 热缩式电力电缆终端头pyrocondensation power cable terminal 钢结构支架配管steel structure bracket tubing 万用槽钢versatile U-steel 电缆托架 cable bracket 钢制托盘式桥架steel Tray-type cable support system waterproof socket 防水插座 防爆插座Explosion-proof socket 接地绞线earthing twisted pair 接地母线 earthing bus
国际展会常见英文专业术语（一） Affixed merchandise --------- Exhibitor ' s products fastened to display --------------- 参展商携带的，与参展 有关的辅助用品 Air freight ------- Materials shipped via airpla ne ------------- 空运货物 AT-site ------- More com monly called On-site, Locati on of eve nt or exhibit Att neda nee ------ Number of people at show or exhibit --------------- 参展人数 Atte ndee ------- One who atte nds an expositi on. May also be referred to as delegate or visitor, but should not be used for “ exhibitor ” ------ 参观展会的人（不包括参展商） Attendee brochure ----------- Direct mail piece sent to current and prospective attendees that promotes the ben efits of atte nding a specific show ---- 分发给展会观众的宣传资料 国际展会常见英文专业术语（二） Booki ng ----- An arran geme nt with a compa ny for use of facilities, goods or services ---- 预订 Booth ------ One or more sta ndard un its of exhibit space. In U.S.A a sta ndard un it is gen erally known to be a 10 ' x 10 ' space --------- 展位（在美国一个标准展位是 10x10平方英尺） Booth area ------- T he amou nt of floor space occupied by an exhibitor ――展会现场 ――展位面积
钢结构术语中英文对照 强度strength 承载能力load-carrying capacity 脆断brittle fracture 强度标准值characteristic value of strength 强度设计值design value of strength 一阶弹性分析first order elastic analysis 阶弹性分析second order elastic analysis 屈曲buckling 腹板屈曲后强度post-buckling strength of web plate 通用高厚normalizde web slenderness 整体稳定overall stability 有效宽度effective width 有效宽度系数effective width factor 长细比slenderness ratio 换算长细比equivalent slenderness ratio 支撑力nodal bracing force 无支撑纯框架unbraced frame 强支撑框架frame braced with strong bracing system 弱支撑框架frame braced with weak bracing system 摇摆柱leaning column 柱腹板节点域panel zone of column web 球形钢支座spherical steel bearing 橡胶支座couposite rubber and steel support 主管chord member 支管bracing member 隙节点gap joint 搭接节点overlap joint 平面管节点uniplanar joint 空间管节点multiplanar joint 组合构件built-up member 钢与混凝土组合梁composite steel and concrete beam A acceptable quality 合格质量 acceptance lot 验收批量 aciera 钢材 against slip coefficient between frictionsurface of high-strength bolted connection 高强度螺栓摩擦面抗滑移系数 allowable ratio of height to sectionalthickness of masonry wall or column 砌体墙、柱容许高厚比 allowable slenderness ratio of steel member 钢构件容许长细比
预约券reservation ticket 下午茶high tea 微博Microblog/ Tweets 裸婚naked wedding 亚健康sub-health 平角裤boxers 愤青young cynic 灵魂伴侣soul mate 小白脸toy boy 精神出轨soul infidelity 人肉搜索flesh search 剩女3S lady（single，seventies,stuck）/left girls 山寨copycat 异地恋long-distance relationship 性感妈妈yummy mummy 钻石王老五diamond bachelor 时尚达人fashion icon 上相的,上镜头的photogenic 学术界academic circle 哈证族certificate maniac 偶像派idol type 住房公积金housing funds 熟女cougar（源自电影Cougar Club） 挑食者picky-eater 伪球迷fake fans 紧身服straitjacket 团购group buying 奉子成婚shotgun marriage 婚前性行为premarital sex 炫富flaunt wealth 决堤breaching of the dike 上市list share 赌球soccer gambling 桑拿天sauna weather 自杀Dutch act 假发票fake invoice 金砖四国BRIC countries 笑料laughing stock 泰国香米Thai fragrant rice 学历造假fabricate academic credentials 泄洪release flood waters 狂热的gaga eg: I was gaga over his deep blue eyes when I first set eyes on him 防暑降温补贴high temperature subsidy 暗淡前景bleak prospects
机械专业英语词汇 陶瓷ceramics 合成纤维synthetic fibre 电化学腐蚀electrochemical corrosion 车架automotive chassis 悬架suspension 转向器redirector 变速器speed changer 板料冲压sheet metal parts 孔加工spot facing machining 车间workshop 工程技术人员engineer 气动夹紧pneuma lock 数学模型mathematical model 画法几何descriptive geometry 机械制图Mechanical drawing 投影projection 视图view 剖视图profile chart 标准件standard component 零件图part drawing 装配图assembly drawing 尺寸标注size marking 技术要求technical requirements 刚度rigidity 内力internal force 位移displacement 截面section 疲劳极限fatigue limit 断裂fracture 塑性变形plastic distortion 脆性材料brittleness material 刚度准则rigidity criterion 垫圈washer 垫片spacer 直齿圆柱齿轮straight toothed spur gear 斜齿圆柱齿轮helical-spur gear 直齿锥齿轮straight bevel gear 运动简图kinematic sketch 齿轮齿条pinion and rack 蜗杆蜗轮worm and worm gear 虚约束passive constraint 曲柄crank 摇杆racker