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	-fication ficelle fiche Fichte, Johann Gottlieb fichu ficket fickle fickleness fickly FICO FICO score fict. fictile fiction fictional fictionality fictionalization fictionalize fictionally fictioneer fictionist fiction writer fictitious fictitiously fictitiousness

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