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  1. Oxford Dictionary

    valve

    • IPA[valv]

    英式

    • n.
      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.

    safety valve

    • n.
      a valve opening automatically to relieve excessive pressure, especially in a boiler.

    Oxford American Dictionary

    safety valve

    • n.
      a valve that opens automatically to relieve excessive pressure.

    Oxford Dictionary

    butterfly valve

    • n.
      a valve consisting of a disk rotating on an axis across the diameter of a pipe to regulate the ...

    Oxford American Dictionary

    ball valve

    • n.
      a one-way valve that is opened and closed by pressure on a ball which fits into a cup-shaped ...

    Oxford Dictionary

    ball valve

    • n.
      a one-way valve that is opened and closed by pressure on a ball which fits into a cup-shaped ...

    Oxford American Dictionary

    outlet valve

    • n.
      a valve that controls the escape of fluid or gas from a pipe, channel, or duct: the outlet valve was connected to a pump

    Oxford American Dictionary

    bicuspid valve

    • n.
      another term for mitral valve

    Oxford American Dictionary

    stop valve

    • n.
      a valve used to stop the flow of liquid in a pipe.

    Oxford American Dictionary

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    valve

    • IPA[valv]

    美式

    • n.
      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