英语词汇“spring switch”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	spring switch
释义	spring switch spring switch [′spriŋ ‚swich] (civil engineering) A railroad switch that contains a spring to return it to the running position after it has been thrown over by trailing wheels moving on the diverging route.
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