风力等级

And then automatic adjustment of grades of the wind force of the electric fan is achieved without manual regulation.

这样实现了电风扇风力等级的自动化调整，无需人工调整。

According to the calculating principle of wind scale and earthquake magnitude, the concept of the magnitude of self-purification capacity of water environment of area was put forward.

根据地震等级和风力等级的计算原理，提出了区域水环境自净能力等级的概念。

The relationship between the time of deicing and the wind scale at different input power is studied and the minimum wind scale which must be considered in deicing or snow melting is obtained.

通过分析在不同的输入功率下化冰时间与风力等级的关系，得到了风力对融雪化冰时效果的影响以及必须考虑的最小风级。

Factors that influence the effects of an Air Curtain machine Air flow scale: natural factors of influence

影响风幕机效果的因素风力等级表：自然影响因素