在对机器进行初步规划时,必须对装载、使用的运动(学的)元件的类型 和工程材料的正确使用作出基本决定。
PPT课件
4
4
Machine design
Economic [ˌi:kəˈnɑ:mɪk] considerations are usually of prime [praɪm] importance when the design of new machinery is undertaken. In general, the lowest over-all costs are designed.
nuisance [ˈnju:sns] n. 讨厌的人或东西,麻烦事
loosen [ˈlu:sn] v. 解开,放松,松开
radiator [ˈreidieitə] n. 散热器,电暖炉,辐射体
PPT课件
1
1
Design of machine and machine elements word
目标是要生产一台机器,它不仅在合理寿命期内坚固耐用,同时价格 低廉足以在经济上是可行的。
PPT课件
7
7
Machine design
The engineer in charge of the design of a machine should not only have adequate [ˈædɪkwɪt] technical training, but must be a man of sound judgment and wide experience, qualities which are usually acquired only after considerable time has been spent in actual professional work.