The ground effective radiations are calculated based on the ground temperature. air temperature. watervapourpressure and total cloud cover.
再利用地面温度、气温、水汽压和总云量，计算得出福建省各地的地面有效辐射的月、年平均辐照度。
2
More specifically, we can say that there is a trend towards equilibrium between the watervapourpressure in the product and the partial pressure of the watervapour in the air.
我们可更准确地说，是产品内部的水蒸汽压力与空气中部分的的水蒸汽压力之间有一种趋于平衡的趋势。
3
The vapour cone effect is caused by pressure differences around the aircraft. A sudden drop in pressure associated with high speed allows watervapour, which is normally invisible, to condense as fog.