低压,欠压动作
Low Pressure Valve Options and Accessories Misc. 低压阀门备选件和附件。
Also, lower voltage taps are usually provided for idling and slow heatups. 通常在机器空转或者缓慢加热时用到低电压插孔。
A nanovoltmeter is a sensitive voltmeter optimized to measure very low voltages. 纳伏表是专门适合测量非常低电压的电压表。
