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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.
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Public Record Office
public relations
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更新时间:2025/3/23 10:40:13