The factors stated are based upon a fully open valve.

这里所述的流量系数是指阀门全开时的流量系数。

youdao

Keep return piping valve closed until trap fills with condensate. Slowly open valve.

保持回路管道阀门处于关闭状态直到疏水阀充满冷凝物为止。慢慢开启阀门。

youdao

Also the valve heads will be liable to be burnt by the passing hot gases, and there is the likelihood of the piston crown touching an open valve, which can seriously damage the engine.

而且气门头部容易被经过的高温气体烧蚀，活塞顶部也可能会碰到气门使发动机严重损坏。

youdao

But not before an open valve spilled 71, 000 gallons of crude, blanketing the town.

FORBES: Slick

The panel met to evaluate use of the novel device in patients with significant symptomatic mitral regurgitation (MR) who have been determined by a cardiac surgeon to be too high risk for open mitral valve surgery and in whom existing co-morbidities would not preclude the expected benefit from correction of the MR.

FORBES: FDA Panel Gives Tepid Endorsement To Abbott's MitraClip

It's been seven months since Max's last surgery -- an open heart pulmonary valve replacement -- and he has been cleared for all activities by his doctors.

CNN: Mini Darth Vader uses force for good