基本解释[化] 甲醛同根派生 oxymethylene相关词英汉例句Keywords poly(oxymethylene);irradiation;CaCO 3; 聚甲醛;辐照;纳米碳酸钙;oxymethylene copolymer fibre 甲醛共聚物纤维oxymethylene diphosphoric acid 氧亚甲焦磷酸oxymethylene更多例句