ethylene gas乙烯气体ethylenen.乙烯ethylenediamine-tetraacetic acid乙二胺四乙酸, 乙地酸ethylene gas-phase polymerization乙烯气相聚合ethylenediamine tetra-acetic acid乙二胺四乙酸ethylene glycol ethyl ether acetate乙酸乙二醇乙醚ethylene-petroleum oil copolymers乙烯石油共聚物ethylene propylene diene terpolymer三元乙丙橡胶ethylene-butyl acrylate copolymer乙烯-丙烯酸丁酯共聚物ethylene-propylene-diene rubber三元乙丙橡胶ethylene/vinyl acetate copolymer乙烯-醋酸乙烯共聚物ethylene/vinyl alcohol eopolymer（乙烯／乙烯醇）共