英语词汇“facing-point lock”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	facing-point lock
释义	facing-point lock noun : a mechanical lock for a railroad switch, derail, or movable-point frog comprising a plunger stand and a plunger which engages a lock rod attached to the switch point to lock the operated unit
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