... face air velocity 工作面风流速度 face velocity of mass 迎风面质量流速 cooling air face velocity 冷却空气迎面风速 ...
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At a certain distance, the collecting efficiency was higher as the hood face air velocity became greater.
而在同一距离上，罩口风速越大，捕集效率就越高。
When working face has mechanized support, air leakage quantity is small, velocity is low in goaf, and spontaneous combustion zone is more approach to working face.
有综采支架时，工作面向采空区的漏风量过小，致使采空区的速度很小，自燃带靠近工作面。
Room air current velocities in the vicinity of fume hoods should be as low as possible, ideally less than 30 percent of the face velocity of the fume hood.
通风柜附近的扰流流速应尽可能低，理想的流速应低于通风柜设计面风速的30%。
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