目录简介 | Gas transmission quantity is, under constant temperature and unit pressure, the gas volume that transmits stably through per unit area of the sample in per unit time. It is expressed as the value of volume under standard temperature and pressure with the unit: cm3/ (m2 ?24h ? 0.1Mpa).
Gas transmission coefficient is, under constant temperature and unit pressure difference, the gas volume that transmits stably through per unit thickness and unit area of the sample in per unit time. It is expressed as the value of volume under standard temperature and pressure with the unit: cm3?cm/ (m2 ? S ?Pa).
Testing environment: temperature: (23±2) ℃, relative humidity: (50±5) %
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