英语词汇preaction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
释义	preaction 简明释义 n.预先行动：在某事发生之前采取的行动或措施。网络释义短语 1 recycling preaction system 重复启闭预作用系统 2 preaction valve 预作用阀 3 preaction valve installation 预作用装置双语例句 1 This article, from the design of preaction auto-sprinkler system for fire protection in actual projects, has expounded its characteristics and the designing experience. 通过对实际工程预作用自动喷洒系统消防设计，阐述了预作用自动喷洒系统特点及设计体会。词源 1 preaction: pre- +? action FROM: wiktionary
随便看	ball type guy insulator ball type handler ball-type handler ball type insulator ball type phototube ball type torpedo ball(-type)valve ball-type valve ball type valve ball-type virus ball type viscometer ball-type wheel ballu Balluk Ballum ball universal joint ballup ball-up ball up Ballure balluster ballute ballute ball valve ballvalve

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。