如果空气回流受阻，那么风扇会转，却不会吹动空气。
悬空支架式设计，能有效避免静脉回流受阻。
Suspending bracket design is able to avoid obstruction of venous reflux effectively.
结论BCS肝脏血液回流受阻，肝脾形态及血流动力学发生了相应改变；
Conclusion The morphology and hemodynamics of liver and spleen in patients with BCS greatly changed due to the retardation of the venous flow from the liver.
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