valve
英 [vælv]
[NOUN]
valves
1. [C 可数名词] 阀门
A valve is a device attached to a pipe or a tube that controls the flow of air or liquid through the pipe or tube.
NOUN. 名词
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valves
A valve is a device attached to a pipe or a tube that controls the flow of air or liquid through the pipe or tube.
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