英语词汇“position light signal”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	position light signal
释义	position light signal noun : a fixed railroad signal that gives its indications by varying the positions of two or more lights
随便看	ty ty acid ty lipoprotein ty-flop ty-nest syndrome ty-sec ty-strick ty-sup tyches tychism tychite Tychius tychonian Tychonic tychoparthenogenesis tychopotamic Tychy tycoon tycoonates tycoons tydden tyddyn tydie tye tyed

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position light signal