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:

siphuncle    
腹管

腹管

Siphon \Si"phon\, n. [F. siphon, L. sipho, -onis, fr. Gr. ??? a
siphon, tube, pipe.]
1. A device, consisting of a pipe or tube bent so as to form
two branches or legs of unequal length, by which a liquid
can be transferred to a lower level, as from one vessel to
another, over an intermediate elevation, by the action of
the pressure of the atmosphere in forcing the liquid up
the shorter branch of the pipe immersed in it, while the
continued excess of weight of the liquid in the longer
branch (when once filled) causes a continuous flow. The
flow takes place only when the discharging extremity of
the pipe ia lower than the higher liquid surface, and when
no part of the pipe is higher above the surface than the
same liquid will rise by atmospheric pressure; that is,
about 33 feet for water, and 30 inches for mercury, near
the sea level.
[1913 Webster]

2. (Zool.)
(a) One of the tubes or folds of the mantle border of a
bivalve or gastropod mollusk by which water is
conducted into the gill cavity. See Illust. under
{Mya}, and {Lamellibranchiata}.
(b) The anterior prolongation of the margin of any
gastropod shell for the protection of the soft siphon.
(c) The tubular organ through which water is ejected from
the gill cavity of a cephaloid. It serves as a
locomotive organ, by guiding and confining the jet of
water. Called also {siphuncle}. See Illust. under
{Loligo}, and {Dibranchiata}.
(d) The siphuncle of a cephalopod shell.
(e) The sucking proboscis of certain parasitic insects and
crustaceans.
(f) A sproutlike prolongation in front of the mouth of
many gephyreans.
(g) A tubular organ connected both with the esophagus and
the intestine of certain sea urchins and annelids.
[1913 Webster]

3. A siphon bottle.
[1913 Webster]

{Inverted siphon}, a tube bent like a siphon, but having the
branches turned upward; specifically (Hydraulic
Engineering), a pipe for conducting water beneath a
depressed place, as from one hill to another across an
intervening valley, following the depression of the
ground.

{Siphon barometer}. See under {Barometer}.

{Siphon bottle}, a bottle for holding aerated water, which is
driven out through a bent tube in the neck by the gas
within the bottle when a valve in the tube is opened; --
called also {gazogene}, and {siphoid}.

{Siphon condenser}, a condenser for a steam engine, in which
the vacuum is maintained by the downward flow of water
through a vertical pipe of great height.

{Siphon cup}, a cup with a siphon attached for carrying off
any liquid in it; specifically (Mach.), an oil cup in
which oil is carried over the edge of a tube in a cotton
wick, and so reaches the surface to be lubricated.

{Siphon gauge}. See under {Gauge}.

{Siphon pump}, a jet pump. See under {Jet}, n.
[1913 Webster]


Siphuncle \Si"phun`cle\, n. [L. siphunculus, sipunculus, dim. of
sipho. See {Siphon}.] (Zool.)
The tube which runs through the partitions of chambered
cephalopod shells.
[1913 Webster]


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


  • 1 Minute Timer - Online Stopwatch
    Use this timer to easily time 1 Minutes Fullscreen and free!
  • 1 Minute Timer - YouTube
    Set a timer for 1 minute with this simple and easy 1 minute countdown This video silently counts down from 1:00 to 00:00 and ends with a gentle alarm sound, perfect for focus, productivity, or
  • 1 Minute Timer Set 1:00 Timer
    A 1 Minute timer is a simple yet effective tool for productivity, workouts, cooking, and various time-sensitive tasks Whether you're using it for time management or a quick break, setting a 1 Minute countdown can help you stay on track and focused
  • 1 Minute Timer | Stopwatch App
    Need a quick and easy way to time your activities? Look no further! Our 1 Minute Timer is perfect for timing short tasks or taking quick breaks The 1 Minute Timer tool is a simple online countdown timer that tracks exactly one minute of time upon activation
  • 1 Minute Timer – 123Timer
    Start this simple 1 Minute timer in just 1 click! This 1 Minute Timer is very easy to start, just click the Start button and go about your business
  • 1 Minute Timer - Online and Free
    1 Minute Timer is designed to keep track of a short period of time easily and free Start the countdown timer and a beep will sound when finished
  • 1 Minute Timer - Online Timer Countdown
    Thank you This page is a 1 minute timer that counts down once you click 'Start' This online countdown timer will alarm you with sound in 1 minute You can pause and resume this timer anytime by clicking the 'Pause' or 'Resume' buttons When the timer is up, it will blink and sound an alarm
  • 01:00 - 1 Minute Timer
    Boost your productivity with our free online 1 minute timer Perfect for Pomodoro, micro-breaks, and focus No app needed—just click START Try your 1 minute timer now!
  • 1 Minutes Timer (No Ads, Big, Free Customize)
    1 minutes timer countdown No ads, big, clean and free to use Full screen and dark mode supported Various customization available
  • 1-minute Timer | stagetimer. io
    With just one click, this browser-based timer is ready to go One minute is enough time for your heart to beat about 70 times, pumping approximately 5 liters of blood through your body If you want to share this timer via link with others, then try out the full version of Stagetimer





中文字典-英文字典  2005-2009