- 1
A valve is a device that controls the flow of liquid, gas, or air through a pipe or tube — it can open, close, or limit how much passes through, like the valve on a bicycle tire you use to add air, or the valves in your heart that keep blood flowing in the right direction. Engines, , and even musical instruments like trumpets use valves to control flow or airflow.
閥門、活門；（心臟）瓣膜
原始詞典資料10 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
valvenoun/ˈvælv/
- 1
A device that controls the flow of a gas or fluid through a space, such as a pipe, manifold, or plenum.
- open the valve
- close the valve
- 2
A device that controls the flow of a gas or fluid through a space, such as a pipe, manifold, or plenum.
- Near-synonym: poppet valve
- In nearly all internal combustion engines, the valves are of the poppet type.
- 3
anatomymedicinesciencesOne or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction.
- the ileocecal valve
- the atrioventricular valves
- 4
One of the leaves of a folding door or of a window sash.
- 5
A vacuum tube.
- 6
biologybotanynatural-sciencesOne of the pieces into which certain fruits naturally separate when they dehisce.
- 7
biologybotanynatural-sciencesA small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, such as in the barberry.
- 8
biologynatural-sciencesOne of the pieces or divisions of bivalve or multivalve shells.
另外 1 個記錄的用法
- 9
biologynatural-sciencesOne of the two similar portions of the shell of a diatom.
valveverb/ˈvælv/
- 1
To control (flow) by means of a valve.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。