这样的压力可以保证血液由下向上加速回流，清理血管内多余的堆积物，不会造成因血管挤压导致的血液不流畅。
This pressure can ensure the blood from the bottom up to accelerate the return, cleaning vascular excess deposits, not be caused by vascular pressure caused the blood is not smooth.
只要你轻轻由下向上滑动屏幕，美女的裙子就会随着你滑动屏幕的幅度而起伏摇摆。
As long as you gently from upwards sliding screens, beauty skirt will as you slide screen amplitude rises and sway.
在相同水流量条件下，水由下向上流时水中臭氧浓度，高于由上向下流时相同水力停留时间时的臭氧浓度。
At the same flow rate the concentrations of ozone in upflow are higher than that in downflow at the same HRT.
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