专业英语作业习题.docx

由张学炳整理，仅供参考，如有问题还请见谅电路作业(英译汉)：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3/49、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、