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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
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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