专业英语
lilylutianshu
第1楼2008/06/18
methane and its upstream and downstreeam products
何当奇
第2楼2008/06/19
中国石化业投资主体多元化初步形成The Chinese investment subject pluralism of petrochemical industry has been preliminarily shaped up.二甲醚工业发展亟需完善产业链The maturity of industrial chain is needed urgently to develop the dimethyl ether industry.
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