基本解释[能源科学技术]有规立构聚丙烯英汉例句双语例句A composition for preparing tarpaulin is studied by using a tactic polypropylene and natural rubber.研究了无规聚丙烯与天然橡胶并用制备篷布的配方。专业释义能源科学技术有规立构聚丙烯