用风速计量度平均风速，用一条轻的线和一个指南针找出风向。
Measure average wind speed by anemometer . Find out wind direction by light thread and compass.
用风速计量度平均风速，用一条轻的线和一个指南针找出风向。
Measure average wind speed by anemometer. Find out wind direction by light thread and compass.
各种污染物日平均浓度值与地面风速相关也非常好。
Daily average concentration of various pollutants also has a close correlation with ground wind velocity.
有关研究显示桥梁最低颤振临界风速可能发生在平均风与桥跨成某一偏角的斜风情况。
Some research show the lowest flutter critical wind speed may occur in skew wind case.
有关研究显示桥梁最低颤振临界风速可能发生在平均风与桥跨成某一偏角的斜风情况。
Some research show the lowest flutter critical wind speed may occur in skew wind case.
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