frost - resistant measures抗冻措施
frost-resistant concrete抗冻混凝土
frost-resistant medicament防霜药剂
frost-resistant principle防冻原理
frost-resistant material防冻材料
frost-resistant brickwork防冻砖砌体
frost-resistant measures抗冻措施
frost-resistant layer防冻层
The Frost-resistant Treatment防霜处理