英语词汇“permissive signal”的中英文释义、用法、翻译及短语词组-英汉翻译词典-东流网

单词	permissive signal
释义	permissive signal 英?[p??m?s?v ?siɡn?l] 美?[p??m?s?v ?s?ɡn?l] 释义容许信号行业词典铁道容许信号???
随便看	cross roll straightening machine cross rope cross rope making machine cross-roughing cross-row crossrow cross row crossrows cross-ruff crossruff crossruffed crossruffing cross-ruffing crossruffs cross-ruling cross ruling screen cross rung cross running knot cross saddle cross-sail cross sale cross saw cross sb's hand cross sb.'s hand cross sb's mind

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permissive signal