词汇“先开后合”的意思、用法、释义、翻译、读音、例句、短语、词组-国际大辞典

单词	先开后合
释义	先开后合先开后合[xiān kāi hòu hé]1.■{电} break-before-make 常用词组1.■先开后合触点 break-before-make contact
随便看	mean stress mean sun meant mean tension mean terms meantime mean time relaxation meantime screw mean-time-to-failure mean-time-to-first-failure mean tobacco mean trajectory mean turning moment meantype mean-unbias(s)ed estimator mean utilization mean value mean value periodic quantity mean value theorem mean variation mean variation in rates mean vector mean velocity mean volume-surface diameter mean well by [towards, to] sb.

国际大辞典收录了835600条英语、德语、日语等多语种在线翻译词条，基本涵盖了全部常用单词及词组的翻译及用法，是外语学习的有利工具。