polyurethane foam of hard quality的意思|示意
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硬质聚氨酯泡沫
polyurethane foam of hard quality的网络常见释义
硬质聚氨酯泡沫 ...工程论文-中国论文联盟 关键词:硬质聚氨酯泡沫;屋面防水保温;施工工艺 [gap=577]Key words: polyurethane foam of hard quality; the roofing is kept waterproofly warm; construction craft ..