英语词汇preaction valve installation怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	preaction valve installation
释义	preaction valve installation 简明释义预作用装置网络释义 1 ?预作用装置名词定义中文名称：预作用装置英文名称：preaction valve installation 定义：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。预作用装置应用学科：船舶工程（一级学科）；船舶机械（二级学科）
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英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。