专业英语作业习题
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电路
作业(英译汉)：
1、 passive/ active network 无源/有源网络
2、 the rate of change with time of the current 电流随时间的变化率
3、 passive circuit elements无源电路元件
4、proportionality constant 比例常数
5、voltage /current source电压/电流源
6、 voltage drop/rise电压降/升
7、loop analysis/current回路分析法/回路电流
8、Note that conventional current flow is used;hence the currentin each element is shown in the
direction of decreasing voltage.
注意：电流的参考方向为惯用的参考方向，因此流过每一个元件的电流与电压降的方向一致
9、In their ideal form,voltage sources generate a constant voltage independent of the current drawn
from the source. The aforemetioned battery and generator are regarded as voltage sources since
their voltage is essentially constant with load .
这理想状态为电压源两端的电压恒定，与从电压中流出的电流无关。因此负载发生变化时电压基本恒定，因此上述电池和发电机被认为电压源
三相电路
作业(英译汉)：
1、armature coil 电枢线圈
2、three-wire or four-wire three-phase system三线或四线三相系统
3、wye-connection /delta-connectionY形联结/△形联结
4、phase/line voltage 相/线电压
5、phase sequence 相序
6、 phasor diagram相量图
7、positive half-cycle 正半周期
8、Three-phase machinery and control equipment are smaller ,lighter in weight,and more efficient
than single-phase equipment of the same rated capacity.in addition to the above-mentioned
advantages offered by a three-phase system, the distribution of three-phase power requires only
three-fourths as much line copper as dose the single-phase distribution of the same amount of
power .
三相供电的机械和控制设备与相同额定容量的单相供电设备相比：体积小、重量轻、效率高，除了三项系统提供的上述优点，三相电的传输需要的铜线仅仅是同样功率大小单相电传输所需铜线的3/4
9、A three-phase electric circuit is energized by three alternating emfs of the same frequency and
differing in time phase by 120 electrical degrees.
三相电路可由三个频率相同在时间在相位相差120°电度角的电动势供电
计算机的结构与功能
翻译作业：
1、internal architecture of a computer计算机内部体系结构
2、instruction execution cycle指令执行周期
3、binary-coded instruction二进制编码指令
4、memory存储器 5、central processing unit(CPU)中央处理(单元)器
6、external processor bus外部处理器总线
7、input/output system输入/输出系统
8、word length字长
9、program branches程序分支
10、machine-language instruction机器语言指令
11、operation code操作码
12、operand address操作地址
13、immediate operands立即操作数
14、Branch address转移地址
15、addressing range of the microprocessor微处理器的寻址范围
16、variable instruction fields可变的指令域(变指令段)
17、multiword instructions多字指令
18、memory space存储空间
19、data types数据类型
20、binary-coded decimal digit二进制编码十进制数
21、single-precision floating-point data types(32bits)单精度浮点数据类型
22、double-precision floating-point data types(64bits)双精度浮点数据类型
23、computer terminal key计算机终端键
24、American Standard Code for Information Interchange (ASCII)美国信息交换标准码
25、digital control system数字控制系统
26、primary memory主内存
27、random-access memory(RAM)随机访问存储器
28、read-only memory(ROM)只读存储器
29、programmable read-only memory(PROM)可编程只读存储器
30、erasable programmable read-only memory(EPROM)可擦可编程只读存储器
31、electronically erasable PROM is abbreviated EEPROM电子可擦除PROM（可擦可编程只读存储器）缩写为EEPROM
32、arithmetic and logical unit(ALU)逻辑运算单元
33、registers寄存器
34、internal processor bus内部处理器总线
35、Instruction register指令寄存器
36、programmer’s model of the CPUCPU程序员模型
37、instruction set指令集
38、Flag register标志寄存器
39、status register状态寄存器
40、condition register条件寄存器
41、program counter(instruction pointer)程序计数器
42、register addressing寄存器寻址
43、register indirect addressing寄存器间接寻址
44、control lines控制线
45、”read” command读指令
46、data bus 数据总线
47、address bus地址总线 48、instruction processing sequence指令处理顺序
49、reset request复位请求
50、unrecoverable error不可恢复错误
51、interrupt request中断请求
52、service subroutine服务子程序
53、bus request总线请求
54、terminal interface终端接口
55、carriage return回车
56、data source device数据源设备
57、data destination数据目的地
58、bus buffers总线缓冲
59、microprocessor integrated circuit位处理器集成电路
60、I/O-mapped input/outputI/O映射的输入/输出
61、I/O port I/O端口
62、memory-mapped I/O存储器映射的输入/输出
63、The CPU reads and interprets the instructions, reads the data required by each instruction,
executes the action required by the instruction, and stores the results back in memory.
CPU读取并解释指令，读取每一条指令所需的数据，执行指令所需的动作并将结果存储回内存
64、The “number” of a location is called its address.单元的编号为地址
65、To carry out a fetch, the processor places(enables)the binary-coded address of the desired
location onto the address lines of the external processor bus.
为了完成这次读取，处理器把所需单元的二进制码地址放到外部处理器地址总线的地址线上
66、The ALU provides a wide arithmetic operations, including add, subtract, multiply, and divide.
ALU提供很广泛的算数操作，包括加、减、乘和除
67、Decoding means that the operation code is examined.译码意味着检查操作代码
68、A bus is a set of closely grouped electric conductors that transfers data, address, and control
information between functional blocks the CPU.
总线是一套分组的电导线，它能在CPU的功能模块间传递数据、地址和控制信息
69、A total program cycle comprises many instruction cycles, each instruction cycle can be divided
up into its component machine cycles, and each machine cycle comprises a number of clock
cycles.
一个总程序周期是由许多指令周期组成，每个指令周期分为它部件的机器周期，每个机器周期由许多时钟周期组成
A Industrial Robot
翻译作业：
1、single-purpose machines 单一用途（专用）的机器
