风塔是一种顶部开口，面向主风，捕捉气流的系统。
The wind tower is a system for capturing air currents with openings at the top facing the prevailing winds.
放射性微粒形成之后，可以飘到很远的地方，具体多远就看主风的速度和方向。
Radiation-emitting particles can then travel afar, depending on the speed and direction of the prevailing wind.
流化催化裂化装置再生器主风分布管的设计直接影响再生器的平稳操作。
The design of main air distributor in regenerator of FCCU is directly related to the smooth operation of regenerator.
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