1、Note the polarity of the voltage drop across R.
注意R上電壓降的極性。

2、Should be larger port area to ensure less friction and pressure drop across the valve.
較大開口區(qū)域應保證通過閥門較小的摩擦力和壓力降。

3、To further enhance efficiency the voltage drop across the tracking regulators has been minimized.
要進一步提高效率，需最小化跟蹤穩(wěn)壓器過程中的壓降。

4、They also limit the voltage drop across the igniter during continuity testing.
他們也限制了壓降 * 的過程中的連續(xù)性測試。

5、Read the pressure drop across the valve with a Watts Series PG meter.
利用美國瓦茨系列PG儀器讀出通過閥門的壓降。

drop across翻譯