该衰减电路是一种降低静电计交流响应的低通滤波器，使我们可以准确地进行直流弱电流的测量。
A damping circuit is a type of low pass filter that reduces the electrometer's ac response so the low DC current can be measured accurately.
衰减电路可以装在静电计的内部，也可以是一个外部电路。
The damping circuit may already be built into the electrometer or may be an external circuit.
为了解决由烟或气所引起的信号衰减问题，研制出了双色高温计。
Two color pyrometers were developed to solve the problem of signal attenuation by intervening smoke or fumes.
为利用观察点处实测声频谱来预估实际声源自由场频谱特性，必须适当地计及地面反射和衰减效应的影响。
The ground reflection and attenuation must be properly accounted for in order to use the source spectrum measured at the site of the observer to predict the actual source spectrum in the free field.
采用RF—5301PC荧光分光光度计测定激发光谱、发射光谱和磷光衰减曲线；
The photoluminescence spectra and the decay curves were recorded on RF-5301PC.
大气对微波的衰减可以用微波辐射计来测定。
The attenuation can be determined by using microwave radiometer.
描述：HA9可编程衰减器是一种高分辨率，扩展范围，功率计和测试一般测试和实验室工作的可编程衰减器的理想选择。
The JDS Uniphase HA9 PThe JDS Uniphase HA9 Programmable Attenuator is a highresolution, extended-range, programmable attenuator ideal for testing power meters and for general test and laboratory work.
描述：HA9可编程衰减器是一种高分辨率，扩展范围，功率计和测试一般测试和实验室工作的可编程衰减器的理想选择。
The JDS Uniphase HA9 PThe JDS Uniphase HA9 Programmable Attenuator is a highresolution, extended-range, programmable attenuator ideal for testing power meters and for general test and laboratory work.
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