常見例句雙語例句The Breaker can be attached with shunt tripping device, undervoltage tripping device, auxiliary contacts, alarm contacts and motor-operated drive.斷路器可以加裝分勵脫扣器、壓脫扣器，輔助觸頭，報警觸頭和電動操作機構(gòu)。 返回 undervoltage tripping