他们可以产生“球阀”效应，引起房室瓣口间歇性关闭。

They can produce a "ball valve" effect by intermittently occluding the atrioventricular valve orifice.

youdao

他们可以产生“球阀”效应，引起房室瓣口间歇性关闭。

They can produce a "ball valve" effect by intermittently occluding the atrioventricular valve orifice.

youdao