constant humidity短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 稳定湿度 Under the condition of constant temperature and constant humidity, the water vapor penetration rate of the separate coatings film is tested by the wet cup method that is simple and practical. 在恒温恒湿条件下，湿杯法检测涂料游离涂膜的透汽性，从而建立了一种简捷实用的水蒸气透过率检测方法。 chemyq