活瓣
valve
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📖 Additional Information
English Phonetic:
vælv
Detailed Definition:
n. a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it\nn. device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone\nn. control consisting of a mechanical device for controlling the flow of a fluid\nn. the entire one-piece shell of a snail and certain other molluscs