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	Definition of position light signal in English: position light signal noun Railways An electric fixed signal which gives instructions to the train driver by the position of the lights on its face, rather than by the colour of the lights. Origin Early 20th century; earliest use found in Journal of the Franklin Institute. Definition of position light signal in US English: position light signal noun Railways An electric fixed signal which gives instructions to the train driver by the position of the lights on its face, rather than by the colour of the lights. Origin Early 20th century; earliest use found in Journal of the Franklin Institute.
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更新时间：2025/2/25 22:23:39