valve
- IPA[valv]
英式
- a device for controlling the passage of fluid or air through a pipe, duct, etc., especially an automatic device allowing movement in one direction only；short for thermionic valve
noun: valve, plural noun: valves
- 釋義
- 相關詞
名詞
- 1. a device for controlling the passage of fluid or air through a pipe, duct, etc., especially an automatic device allowing movement in one direction only a valve shuts off the flow from the boiler when the water is hot enough
- ▪ British short for thermionic valve
- ▪ a cylindrical mechanism in a brass instrument which, when depressed or turned, admits air into different sections of tubing and so extends the range of available notes.
- ▪ a membranous fold in a hollow organ or tubular structure, such as a blood vessel or the digestive tract, which maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow the aortic valve
- 2. each of the halves of the hinged shell of a bivalve mollusc or brachiopod, or of the parts of the compound shell of a barnacle.
- ▪ each of the halves or sections into which a dry fruit (especially a pod or capsule) dehisces.
- a valve consisting of a disk rotating on an axis across the diameter of a pipe to regulate the ...
Oxford American Dictionary
- a valve opening automatically to relieve excessive pressure, especially in a boiler.
Oxford American Dictionary
- a valve that opens automatically to relieve excessive pressure.
Oxford Dictionary
- a one-way valve that is opened and closed by pressure on a ball which fits into a cup-shaped ...
Oxford Dictionary
- a one-way valve that is opened and closed by pressure on a ball which fits into a cup-shaped ...
Oxford American Dictionary
- a valve closed by a thin tapering part.
Oxford Dictionary
- a device giving a flow of thermionic electrons in one direction, used especially in the ...
Oxford Dictionary
- each of a pair of valves in the heart, at the bases of the aorta and the pulmonary artery, ...
Oxford American Dictionary
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- IPA[valv]
美式
- a device for controlling the passage of fluid or air through a pipe, duct, etc., especially an ... a valve shuts off the flow from the boiler when the water is hot enough
Oxford American Dictionary
