The impact is a kind of phenomenon existing extensively in project reality.
冲击是工程实际中广泛存在的一种现象。
In science and project reality, we often need to measure the weak current signal.
在科学和工程实际中，常需检测微弱电流信号。
In science and project reality, we often need to measure the weak current signal.
在科学和工程实际中，常需检测微弱电流信号。
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