low density polyethylene短语¹⁴⁴⁹⁷²⁺² 基本例句 低密度聚乙烯 It prepared a kind of electromagnetic shielding materials through adding stainless steel fiber into low density polyethylene LDPE. 将不锈钢纤维填加到 LDPE中，制备了一种电磁屏蔽材料。 chemyq Results obtained with cis-1,4 polybutadiene and low density polyethylene are given as illustrative examples. 文中尚有顺-1，4聚丁二烯及高压聚乙烯的实测示例。 cnki