solar cell roofing material 太阳电池铺屋面材
roofing material 屋面材料 ; 屋顶材料
surfacing of roofing material 铺顶表面平整
waterproof roll-roofing material 防水卷材
waste roofing material 废旧屋面材料
liquid roofing material 液态屋面材料
millboard roofing material 屋面麻丝板
asphaltic roofing material 沥青基屋面防水材料
waterproof roofing material 屋面防水材料
Other indicators, such as sales of roofing material, point to busier economic activity.
其他的指标，例如屋顶建材的销售，也指向更繁忙的经济活动。
"Imagine carrying a roll of flexible product on the roof and unrolling it," he says. "Workers are already used to unrolling roofing material."
想象一下，带着一卷可卷曲的产品上屋顶，然后把它展开——工人们已经习惯了展开屋顶的材料了。
The plane's steel structure was used for load-bearing walls, while the light-weight aluminum shell and wings were reappropriated as roofing material and exterior walls.
飞机的钢结构被用作承重墙，而轻量级的铝外壳和飞机翅膀则被回收利用成屋顶材料和外墙。
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