This method also has characteristic of low amplitude detection threshold, it can detect weak signals with amplitude value smaller than 10-3 level.
该方法还具有幅度检测门限值低的特点，可对幅度为10 - 3级以下的信号进行检测。
An inverter responses the output of a level greater than or smaller than a threshold value of the low pass filter, and outputs a signal in a high level or a low level.
反相器响应低通滤波器的大于或者小于阈值电平的输出，输出处于高或低电平的信号。
It's proved that the cause of high threshold of thulium laser is the heat-distribution particle at low laser energy level.
理论和实验结果都表明引起铥激光器高阈值的主要原因是温度引起的激光下能级的热分布粒子。
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