
n.瓣膜;真空管;閥門;電子管
The valve of the heart allows the blood to pass in one direction only. 心臟的瓣膜使血液只能朝一個(gè)方向流動(dòng)
We need a valve detector. 我們需要個(gè)真空管檢波器。
We need an eye bolt to fit this valve. 我們需要一個(gè)有眼螺栓來(lái)固定這個(gè)閥門。
Have you turned off the water valve? 你關(guān)掉水閥了嗎?
John Ambrose Fleming invents the two-element "Fleming Valve". 約翰.
Valve actuators have not been correctly adjusted. 電子管驅(qū)動(dòng)器還沒(méi)有正確調(diào)整。
n.瓣膜;真空管;閥門;電子管
雙殼類,蚌類