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	fmddi fmde fm de lesseps fmdf fmdg fmdh fmdhs fmdi fmdic fmdidgad fm (disambiguation) fmdisc fmdj fmdk fmdl fmdlc fmdm fmdn fmdo fmdp fmdr fmd rom fmd-rom fmdrs fmds

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