英语词汇“safety counterweight”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	safety counterweight
释义	safety counterweight safety counterweight A mechanical device attached to an elevator-car frame to stop and hold the car (or its counterweight) in case of a predetermined overspeed, free fall, or a slackening of the hoisting cables.
随便看	genus phlebotomus genus phleum genus phlomis genus phlox genus phoca genus phocoena genus phoenicophorium genus phoeniculus genus phoenicurus genus phoenix genus pholas genus pholidota genus pholiota genus pholis genus pholistoma genus phoradendron genus photinia genus photoblepharon genus phoxinus genus phragmipedium genus phragmites genus phrynosoma genus phthirius genus phthirus genus phthorimaea

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