闸刀（zhá dāo） — knife switch (electrical)

定義

A knife switch, an old-style electrical on/off switch with a hinged metal blade. Now rare, mostly seen in industrial or vintage contexts.

noun

knife switch (electrical)

量詞 · 把

闸刀。
Diàn gōng zhèng zài ān zhuāng zhá dāo.
The electrician is installing a knife switch.
闸刀。
Lǎo shì de zhá dāo kāi guān xiàn zài hěn shǎo yòng le.
Old-style knife switches are rarely used now.
闸刀。
Shǐ yòng zhá dāo shí bì xū zhù yì ān quán.
When using a knife switch, you must be careful about safety.

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