弱风 ，八风之一，指来自东南方的虚风，参“八风”。
其中弱风环境下，表面积污主要与布朗运动和湍流扩散相关，强风环境下主要与气流曳力相关。
One weak wind conditions, surface pollution mainly related to Brownian motion and turbulent diffusion, under strong wind mainly associated with the air drag force.
风这么弱，对外面的温度起不了多大的作用。
The wind was so light that it had only a negligible effect on the outside temperature.
且人工雨林内温、湿度日较差最小，对风的消弱最强。
The daily rang of temperature and humidity were reduced, and the wind velocity was weakened.
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