stop-and-go valve 起动阀 ; 起停阀
On the international valve exposition that kicked off yesterday nevertheless, exhibited a butterfly form valve that exceeds a sousaphone , we go seeing it after all have how old.
不过在昨天开幕的国际阀门博览会上，就展出了一个超大号的蝶形阀门，我们去看看它到底有多大。
The aortic valve has a lot of future promise. That patient population, if you just leave them on medicine, they all tend to go downhill and die anyway.
主动脉瓣膜有很好的前景，这类患者，如果你仅仅给他们药物治疗，他们肯定每况愈下并最终死亡。
Photo 2 shows the valves with the valve spring retainers ready to go.
图片2显示阀与气门弹簧家臣准备。
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