圆形钢柱和桉树胶合板梁支撑聚亚安酯材料的金属屋顶。

Steel circular columns and eucalytus glulam beams support the polyurethane filled metallic roofing.

youdao

圆形钢柱和桉树胶合板梁支撑聚亚安酯材料的金属屋顶。

Steel circular columns and eucalytus glulam beams support the polyurethane filled metallic roofing.

youdao