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production process of light olefins
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production process of light olefins
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工学
低碳烯烃生产工艺
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production process of light olefins
低碳烯烃生产工艺
生产低碳烯烃的工艺技术。低碳烯烃也称作低级烯烃,主要指乙烯、丙烯和丁烯,有时也包括丁二烯。低碳烯烃是重要的基本有机原料,也是石油化工的龙头产品。随着现代化学工业的发展,对低碳烯烃的需求日渐攀升。
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concrete faced rockfill dam
concrete filled steel tube
concrete-filled steel tubular column
concrete for emergency construction and repair
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