When various manipulations disturb the thermal boundary layer inside or the condensate film and gas-vapor diffusion layer outside, the heat transfer effect will be better or be worse off.
各种操作条件只有影响到管程的温度边界层或壳程的冷凝液膜层和气-汽扩散层,才能强化或恶化传热过程。
2
An increase in temperature, for example, can boost the moisture content of the atmosphere, which then causes further warming because water vapor is a greenhouse gas.
例如,温度的升高会增加大气中的水分含量,这又会导致进一步的变暖,因为水蒸气是一种温室气体。
3
The same structure that permits the one gas to enter the leaf, however, permits another gas—water vapor—to be lost from it.