The water transfer properties include water vapor and water drop permeability, hygroscopicity and moisture retention of material.

乙酰化能降低材料的结晶度：水传递特性包括水汽、水滴的渗透以及材料的吸湿与保湿性能。

Magnesium oxide whisker mostly prepared by vapor phase reaction. The process of the preparation needs high temperature or a great deal of inert gases.

氧化镁晶须的制备大多采用气相法,制备过程中需要高温或大量惰性气体,对设备要求高,工艺条件控制苛刻,生产成本高。

Analysis shows that reductions in both the saturated vapor pressure and elastic modulus at high temperature tend to result in die attach film material failure.

分析表明:饱和蒸汽压和高温下弹性模量的降低,均易导致芯片黏结层材料失效。

Third,this thesis introduces the main content of vapor compression heat pump system designing,and fixes the state parameters by thermodynamic calculation. Then it gives the general method and idea of required equipment selection.

再次,介绍了蒸气压缩式热泵设计的主要内容,给出了通过热力计算,确定各工作参数的方法,给出了选型的一般方法和思路。