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coal chemical industry
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coal chemical industry
Encyclopedia
工学
基本有机化工
释
coal chemical industry
煤化工
以煤为原料,采用化学转化法,使煤转化为气体、液体或固体,并进一步加工成各种化学品、燃料和其他产品的流程制造业。是基本有机化工的重要组成部分,也是最重要的煤炭清洁利用途径。
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Silk Manuscript Zubishiyimaijiujing
silk map
silk organdy
Silk Painting
Silk Painting at Tomb of Han Dynasty in Jinqueshan
Silk Painting of Han Dynasty
silk paintings from tombs of Chu State
Silk Paintings of Chu State
silk paintings unearthed at Chu tomb of Changsha City
Silk Paintings Unearthed from Mawangdui Han Tombs
Silk-Piled Thangka of Goddess Usnisavijaya
silk pillow
silk quilt
silk/rayon union stain
silk reeling frame
silk reeling process design
silk-reeling wheel
Silk Road
Silk Roads: the Routes Network of Chang'an-Tianshan Corridor
Silk Roads:the Routes Network of Chang'an-Tianshan Corridor World Culture Heritage
Silk Roads:the Routes Network of Chang'an-Tianshan Corridor
silk Royal Brocade with Bird and Flower Patterns for mounting a painting or calligraphy
silk rug
silk screen platemaking
silks excavated in Palmyra
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