inorganic polymer短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 无机聚合物 化学 The morphology and the molecular weight distribution of inorganic polymer SE- I and PAC have been studied by means of transmission electron microscopeTEM and ultrafiltration method. 利用透射电镜和微孔滤膜超滤法研究了 SE- I和 PAC混凝剂的结构形貌和相对分子质量分布情况； cnki