按照下式计算水蒸气透过率和水蒸气透过系数。
Calculate the water vapor transmission, and permeance as follow.
水蒸气透过系数；
译文：氧气透过系数(PO2)：氧气透过量与薄膜厚度的乘积。
Oxygen Permeability Coefficient (p 'o2) : the product of the permeance and the thickness of film.
随着紫胶用量的增加，膜的溶胀倍数、水蒸气透过系数先降低后变化不大，而拉伸强度上升；
With the increase of lac dosage, solvent swell and water vapor permeability decreased first followed by insignificant change, while tensile strength increased.
并对薄膜的晶相结构、电阻率、光透过率、光吸收系数等电学和光学性质进行了测试和分析。
Test and analysis some properties such as crystal structure, superficial resistivity, light transparence, absorption coefficient etc.
该材料的吸收系数低，红外透过率高，热稳定性能良好。
The material is of lower absorption coefficient, higher infrared transmittance and good thermal stability.
该材料的吸收系数低，红外透过率高，热稳定性能良好。
The material is of lower absorption coefficient, higher infrared transmittance and good thermal stability.
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