英语词汇“preaction valve installation”的读音、翻译、释义、用法及例句-英译汉实时翻译、汉译英在线翻译、英汉互译翻译词典-国先网

词汇	preaction valve installation
类别	英译汉实时翻译、汉译英在线翻译、英汉互译翻译词典
释义	preaction valve installation 释义预作用装置行业词典船舶预作用装置???在消防预作用系统中探测器能在发生火灾时，发出声光报警信号，同时使整个系统充满水的装置。???
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preaction valve installation