包含四个带有多个单方向“闸门”(瓣膜)的腔体。瓣膜的作用是引导血液流向一个特定的方向。
Consists of four Chambers with one-way doors (valves) between to direct the blood to flow in a specific direction.
一旦水滴流到了圆锥体的边缘，就会在锥体表面张力所形成的压力差的作用下流向它的底座，那里是曲线弧度最小的地方。
Once they hit the edge of a cone, drops are propelled towards its base, the least curved region, because of the pressure difference caused by surface tension.
各化学母质流向滚动中的金属或塑料基片的表面，他们互相作用，形成一层纳米级微粒网状结构。
As chemical precursors stream onto the surface of a rolling metal or plastic substrate, they react with one another to form a network of nanoparticles.
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