This implies a pump head-flow characteristic that falls continuously from shut valve to duty point by at least 10%.

这意味着，一个水泵头流量特性属于不断从关闭阀门到责任点，由至少10 %。

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Technical measures of using emergency shut valve and selecting regulating frequency pump are put forward in this paper, assuring function elaboration and running reliability of the Shared system.

提出了采用紧急关闭水阀和合理选用变频泵等技术措施。为共用系统的功能发挥和运行可靠提供了保障。

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The valve has jammed shut.

阀门给卡住了打不开。

《牛津词典》

Safe to say that the Department of Defense does not have a submersible with arms to shut off the valve of a deep-water oil well.

WHITEHOUSE: Aboard Air Force One En Route Andrews Air Force Base

The Abbott valve repair device, which essentially clips the mitral valve shut, was tested in a study that company-funded researchers said showed it was roughly equivalent to surgery.

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That starts off with a "junk shot, " in which material such as rubber tires and golf balls is pumped into the shut-off valve, or blowout preventer, that sits atop the well.

WSJ: Spill Fight Shows Progress