英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:

valve    音标拼音: [v'ælv]
n. 活瓣,阀,活门
vt.
vi. 装阀,用阀调节

活瓣,阀,活门装阀,用阀调节

valve


valve
n 1: a structure in a hollow organ (like the heart) with a flap
to insure one-way flow of fluid through it
2: device in a brass wind instrument for varying the length of
the air column to alter the pitch of a tone
3: control consisting of a mechanical device for controlling the
flow of a fluid
4: the entire one-piece shell of a snail and certain other
molluscs
5: one of the paired hinged shells of certain molluscs and of
brachiopods

Valve \Valve\, n. [L. valva the leaf, fold, or valve of a door:
cf. F. valve.]
[1913 Webster]
1. A door; especially, one of a pair of folding doors, or one
of the leaves of such a door.
[1913 Webster]

Swift through the valves the visionary fair
Repassed. --Pope.
[1913 Webster]

Heavily closed, . . . the valves of the barn doors.
--Longfellow.
[1913 Webster]

2. A lid, plug, or cover, applied to an aperture so that by
its movement, as by swinging, lifting and falling,
sliding, turning, or the like, it will open or close the
aperture to permit or prevent passage, as of a fluid.
[1913 Webster]

Note: A valve may act automatically so as to be opened by the
effort of a fluid to pass in one direction, and closed
by the effort to pass in the other direction, as a
clack valve; or it may be opened or closed by hand or
by mechanism, as a screw valve, or a slide valve.
[1913 Webster]

3. (Anat.) One 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 retard the
flow in the opposite direction; as, the ileocolic, mitral,
and semilunar valves.
[1913 Webster]

4. (Bot.)
(a) One of the pieces into which a capsule naturally
separates when it bursts.
(b) One of the two similar portions of the shell of a
diatom.
(c) A small portion of certain anthers, which opens like a
trapdoor to allow the pollen to escape, as in the
barberry.
[1913 Webster]

5. (Zool.) One of the pieces or divisions of bivalve or
multivalve shells.
[1913 Webster]

{Air valve}, {Ball valve}, {Check valve}, etc. See under
{Air}. {Ball}, {Check}, etc.

{Double-beat valve}, a kind of balance valve usually
consisting of a movable, open-ended, turban-shaped shell
provided with two faces of nearly equal diameters, one
above another, which rest upon two corresponding seats
when the valve is closed.

{Equilibrium valve}.
(a) A balance valve. See under {Balance}.
(b) A valve for permitting air, steam, water, etc., to
pass into or out of a chamber so as to establish or
maintain equal pressure within and without.

{Valve chest} (Mach.), a chamber in which a valve works;
especially (Steam Engine), the steam chest; -- called in
England {valve box}, and {valve casing}. See {Steam
chest}, under {Steam}.

{Valve face} (Mach.), that part of the surface of a valve
which comes in contact with the {valve seat}.

{Valve gear}, or {Valve motion} (Steam Engine), the system of
parts by which motion is given to the valve or valves for
the distribution of steam in the cylinder. For an
illustration of one form of valve gear, see {Link motion}.


{Valve seat}. (Mach.)
(a) The fixed surface on which a valve rests or against
which it presses.
(b) A part or piece on which such a surface is formed.

{Valve stem} (Mach.), a rod attached to a valve, for moving
it.

{Valve yoke} (Mach.), a strap embracing a slide valve and
connecting it to the valve stem.
[1913 Webster]

48 Moby Thesaurus words for "valve":
aerophone, ball cock, ball valve, bell, bung, bunghole,
check valve, cock, cork, discharge tube, double reed, drain cock,
draw cock, embouchure, faucet, gate, horn, key, lid, lip,
mouthpiece, needle valve, peg, petcock, pin, pipe, plug,
radio tube, reed, sea cock, slide, spigot, spike, spile, spill,
stop, stopcock, stopgap, stopper, stopple, tap, tooter, tube,
vacuum tube, valvula, valvule, wind, wind instrument


请选择你想看的字典辞典:
单词字典翻译
Valve查看 Valve 在百度字典中的解释百度英翻中〔查看〕
Valve查看 Valve 在Google字典中的解释Google英翻中〔查看〕
Valve查看 Valve 在Yahoo字典中的解释Yahoo英翻中〔查看〕





安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Valve Functions and Basic Parts of Valve | Control Valve . . .
    Valve bonnets, although a necessity for most valves, represent a cause for concern Bonnets can complicate the manufacture of valves, increase valve size, represent a significant cost portion of valve cost, and are a source for potential leakage Valve Trim The internal elements of a valve are collectively referred to as a valve’s trim The
  • Pipeline Gate Swing Check Valves - Williams Valve
    An upstream bypass system with a needle valve and a check valve can be fitted if needed This provides for relief of excessive body pressure to the upstream flow conduit The needle valve must be kept open while the valve is in service, and can be closed to test and service the check valve Slab Gate Valves for Pipelines
  • Emerson Global | Emerson
    Emerson Global | Emerson
  • Valve Complete Pack on Steam
    Title: Valve Complete Pack Genre: Action, Free To Play, Strategy, Adventure Developer: Valve, Gearbox Software Publisher: Valve Franchise: Dota, Half-Life Languages
  • Valve | The Future of Flex CRE Distribution and Discovery
    Discover the power of Valve, the central source of intelligence for Flex CRE Our SaaS platform helps all players move faster, generate income efficiently, and turn truth into commodity
  • What is Valve Coefficient (Cv) or Flow Coefficient . . .
    Also, the valve C v is directly related to the valve opening The larger the valve opening, the larger is the C v The highest possible Valve Coefficient for a valve is found when the valve is fully open What is the unit of C v? The unit of Valve coefficient C v is US gal min, lbf in 2 However, there are some other notations like K v or f
  • Steam :: Steam News :: A note about the security of your . . .
    The recent leak being reported did NOT breach Steam systems
  • Home | Legend Valve
    Legend Valve 300 N Opdyke Road Auburn Hills, MI 48326 800-752-2082 service@legendvalve com Sitemap About Us eCommerce Contact Us Locate a Rep Legend ESOP Products
  • VALVE TYPES AND SYMBOLS - Fluid Control Solutions
    environments in which valves must operate, a vast array of valve types have been developed • Examples of the common types are the globe valve, gate valve, ball valve, plug valve, butterfly valve, diaphragm valve, check valve, pinch valve, and safety valve • Each type of valve has been designed to meet specific needs





中文字典-英文字典  2005-2009