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.
随便看	highschool high school academic partnership exchanges program high school admission process high school affiliated to fudan university high school affiliated to peking university high school airman apprentice high school all-star challenge high school alumni association high school and beyond high school assessment high school assessment program high school association for the research of principle high school athletic association high school basketball high school basketball network high school bowl high school broadcast journalism high school certificate high school certificate examination high school climbers federation high school college credit high school competency test high school computer training program high school confidential high school conservative clubs of america

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