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valve /ˈvalv/ n

中文：壳瓣

中文 · 壳瓣Español · pistónFrançais · pistonDeutsch · Ventil
Meaning：Device that produces different notes by lengthening the air column in a musical instrument
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Found in these illustrated scenes（6）

Trumpet Dried fruits 2 Dried fruit Structure of a four-stroke gasoline engine Bivalve anatomy Refrigerant Circuit with Expansion Valve

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