英语词汇“position target”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 target
释义	position target noun : a railroad day signal that indicates by its position whether the accompanying switch is open or closed
随便看	serpuloid serra serradella serradilla serranid serranidae serrano serranoid serranus serrasalmo serrasalmus serrata serratae serrate serrate serrate-ciliate serrated serrated serrate-dentate serrated impulse serratia serration serrato- serrato serratula

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