继电平计算机 relay computer
信号电平计 signal-level meter ; meter, signal-level
晶体管式电平计 transistorized level meter
电平计水位表 level meter
平衡电位计 balancing potentiometer
平方电位计 quadratic potentiometer ; quadratic performance index
自动平衡式电位计 self-balancing potentiometer
光电平衡电位计 [电子] photoelectrically balanced potentiometer
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