以下为句子列表：
英文: Abstract: The system composed of intelligent control modules for three-phase induction motors is introduced in this paper.This module can conduct starting,reverse braking,and reverse conrtol with current limiting resistance.Besides,it can also detect low
中文: 文摘:介绍了一种智能三相电机控制模块组成的系统，能在串电阻(电抗)起动、反接制动和换向控制的基础上进行欠压检测、过载检测、断相检测及电机故障保护.尤其适用于起动、制动和换向控制频繁的电机控制场合.
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英文: When the signal source of an op-amp contains an energizing voltage which is much higher than the op-amp supply it is common to use a diode and a current limiting resistor to protect the op-amp in the event of a sensor short-circuit.
中文: 为了防止信号源窜入高压损坏放大器，常见的做法是在放大器输入端到放大器电源间串接一个二极管，并且在放大器输入端串接一个限流电阻。
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