2) water vapor permeability 水蒸气透过系数3) water vapor permeability coefficient 水蒸气透湿系数 1. The polystyrene foam plastics is one of the most widespread materials of applying in external insulation outside wall system,water vapor permeability coefficient affects its heat conduction performance ...
2) water vapor permeability(WVP) 水蒸气透过系数(WVP)3) water vapor permeability coefficient 水蒸气透湿系数 1. The polystyrene foam plastics is one of the most widespread materials of applying in external insulation outside wall system,water vapor permeability coefficient affects its heat conduction...