It has been proved that the saturated cadmium sulphate standard cells with cadmium-lead amalgam cathode have a high emf stability and low emf temperature coefficient.

镉铅汞齐饱和标准电池具有很高的稳定性和较低的电动势温度系数。

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She shuns cellphones and spends as much time as she can in low-EMF areas.

她会尽量避免使用手机，并且尽可能让自己待在低强度辐射的环境当中。

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For some who understand the biophysics of RF and EMF, going back to first principles provides a reality check on a possible threat from this low energy form of radiation.

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