单词	non-return
释义	non-return /ˈnɒnrɪtəːn / adjective Permitting the flow of air or liquid in one direction only: a non-return valve... If it is taking in air it means that the non-return valve is leaking and needs to be replaced. Self-sealing crashworthy fuel tanks have explosion suppression and non-return valves. A non-return flap is usually fitted to prevent cold air coming in.
随便看	makamaka makan makara Makarios III makarism makarize Makarov makarrata Makasar Makasarese Makassar Makassarese Makassar Strait makatea Makaton makdom make make a beeline for make a (big) thing of (or about) makeable make a bolt for make a break for make a clean breast of it make a clean job of something make a clean sweep

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。