Vapour pressure is an important product specification.
蒸气压是一个重要的产品规格。
More specifically, we can say that there is a trend towards equilibrium between the water vapour pressure in the product and the partial pressure of the water vapour in the air.
我们可更准确地说，是产品内部的水蒸汽压力与空气中部分的的水蒸汽压力之间有一种趋于平衡的趋势。
This European Standard covers the following product performance characteristics: reaction to fire, water vapour permeability, flexural strength, and thermal resistance.
此欧洲标准涵盖以下产品性能特点：防火性能，水蒸气渗透性、抗折强度和热阻。
This European Standard covers the following product performance characteristics: reaction to fire, water vapour permeability, flexural strength, and thermal resistance.
此欧洲标准涵盖以下产品性能特点：防火性能，水蒸气渗透性、抗折强度和热阻。
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