... Wind velocity and direction 风速风向 air flow velocity and direction 气体流速流向 wind velocity and direction measurement 风速风向测量 ...
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The Model AS-2 is designed to check velocity and direction of air flow continuously with a smoke tube (No. 301) which reacts with vapour in the air and generates white smoke.
该型号AS - 2的目的是检查速度和方向的空气流动的烟管（301）的反应与空气中的蒸汽并产生白烟不断。
The air flow rate around stripped rotor was analyzed and studied. The velocity decreased with the increasing of the radius and the direction was perpendicular with the direction of radius.
对割前脱联合收割机摘脱割台流场特性进行了分析， 认为摘脱滚筒周围气流速度随极半径增加而减小，方向与极半径垂直，建立了气流流速分布方程。
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