changeover contact
常見例句
- The invention discloses an uninterrupted dual power supply changeover switch, which comprises an encloser, a contact on-off system and a mechanical transmission system.
本發(fā)明公開了一種無間斷雙電源轉(zhuǎn)換開關(guān)，包括殼體、觸頭分合系統(tǒng)、和機(jī)械傳動(dòng) 系統(tǒng)；
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