乙烯-丙烯共聚物 meaning in Chinese

epm：ethylene-propylene polymer
ethylene-propylene copolymer

Rubber and rubber products - determination of the composition of vulcanizates and uncured compounds by thermogravimetry - part 1 : butadiene , ethylene - propylene copolymer and terpolymer , isobutene - isoprene , isoprene and styrene - butadiene rubbers
橡胶和橡胶制品.用热重分析法测定硫化和未硫化化合物的成分.第1部分:丁二烯乙烯-丙烯共聚物和三聚物异丁烯-异戊二烯异戊二烯和苯乙烯-丁二烯橡胶