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.
译文：气体透过系数（P）：单位时间内单位压力差下稳定透过单位面积上单位厚度的试样的气体体积。
Permeance (P): The ratio of the gas transmission rate to the difference in partial pressure of the gas on the two sides of the film.
同时也研究了透过率有效系数随孔径变化的情况。
It also shows that the transmission coefficient changes with the diameter of aperture.
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.
计分基础为左右各个设备正否的28种重要系数，也包含透过13种系数的家庭网路相关技术计分卡。
The scorecard is based on 28 key factors that will determine the success of each device, the home networking technologies scorecard features 13 factors.
直射光的透过率随着叶面积系数增大而减小，夏半年大于冬半年。
The transmissivity of summer half year is larger than winter half year.
直射光的透过率随着叶面积系数增大而减小，夏半年大于冬半年。
The transmissivity of summer half year is larger than winter half year.
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