... micromachine 微型机械，微电机 micromag 一种直流放大器 micromanipulator 微型操纵设备，精密控制器；微型操作钳，微型机械手 ...
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实验证明这种直流放大器与YM 3891型直流放大器效果相近，是一种价廉、实用的直流放大器。
Experimental results indicate that, the DC amplifier is similar to YM3891DC amplifier functionally, but cheaper and more practical than the latter.
本文提出一种放大微弱直流信号的方法，同时设计了实现这一方法的直流放大器电路。
In this paper, a method used to amplify faint direct current signal is put forward, and the circuits of direct current amplifier to realize the method are devised.
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