词汇“back-up valve”的意思、用法、释义、翻译、读音、例句、短语、词组-国际大辞典

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。

单词	back-up valve
释义	见:valve: back-up valve
随便看	essential anemia essential boundary condition essential character essential component essential convergence essential differences essential element essential extension essential goods essential hypertension essential-ies essentialism essentialist essentiality essentialize essentially essentially bounded functions essentially complete class essentially periodic sequence essentially positive matrix essential mapping essential maximum essential mineral essentialness essential oil