ethylenes乙烯属烃ethylenen.乙烯ethylene monoacetate乙二醇一乙酸酯ethylene naphthalene苊ethylene trichloride三氯乙烯ethylene chlorhydrin[化] 2-氯乙醇ethylene maleic acid乙烯马来酸Ethylene dichlorides二氯乙烷类ethylenebisoleoamiden.亚乙基双油酰胺ethyleneglycol-bisβ-aminoethyl etherethylenediaminetetra乙二胺四甲叉膦酸ethylene purificatio乙烯精炼