saturation vapor pressure

基本解释

The influence of atmosphere saturation vapor pressure deficient to sap flow was smaller.
当树内的压力大于大气压力的时候，树液开始流出。
On the other hand, in nighttime, the transpiration mainly depend on temperature , windspeed, and saturation vapor pressure, etc.
作物夜晚的蒸腾变化主要受气温、风速、空气饱和差等因素的影响。
That is different from the elevation above sea level atmospheric pressure and water temperature at 20 degrees centigrade higher than the saturation vapor pressure.
即不同海拔高程处的大气压力和高于20摄氏度水温时的饱和蒸汽压力。