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1 ?工业材料 ... energy industry 能源业 industrial material 工业材料 velvet 天鹅绒（雅思听力必备词汇，是一种材料的名称） ...
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And another, even more important industrial material, petroleum, may also come from the mantle. 另外一种更加重要大的工业材料，石油，同样是来自地幔。 - 2
And another, even more important industrial material, petroleum, may also come from the mantle. - 3
There is great interest, in biotechnological circles, in using silk more extensively as an industrial material. 生物技术界对更广泛地应用丝线作为工业原料有着浓厚的兴趣。
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