同时岩棉亦可与玻璃棉硅酸铝棉复合制成保温管壳。

While silicate glass wool rock wool can also be made of cotton insulation composite shell.

youdao

同时岩棉亦可与玻璃棉硅酸铝棉复合制成保温管壳。

While silicate glass wool rock wool can also be made of cotton insulation composite shell.

youdao