地面管道及设备的保温材料选用复合硅酸盐材料。

Insulation materials of aboveground pipeline and equipment shall be of composite silica te.

youdao

地面管道及设备的保温材料选用复合硅酸盐材料。

Insulation materials of aboveground pipeline and equipment shall be of composite silica te.

youdao