该成膜剂有效提高玻纤的浸润性、硬挺性，以适应FRP新工艺对玻纤的要求。
It increased effectively the impregnation, stiffness of glass fiber, so as to meet the requirements of new technique of FRP.
人工合成的表面活性剂尽管是非常有效的清洁剂，但通常也会令洗后的衣物变得粗糙硬挺。
Synthetic surfactants are effective detergents but have a tendency to leave our clothes rough and stiff.
人工合成的表面活性剂尽管是非常有效的清洁剂，但通常也会令洗后的衣物变得粗糙硬挺。
Synthetic surfactants are effective detergents but have a tendency to leave our clothes rough and stiff.
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