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钢构材料:聚苯乙烯、挤塑板、聚氨酯板,玻璃棉卷毡等。
Four, steel structure material: polystyrene, extruded board, polyurethane board, glass cotton lap. Felt.
youdao
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钢构材料:聚苯乙烯、挤塑板、聚氨酯板,玻璃棉卷毡等。
Four, steel structure material: polystyrene, extruded board, polyurethane board, glass cotton lap. Felt.
youdao