The simplest polymer which can be envisaged consists of the repetition of a single structural unit many times over to form a liner homopolymer.

 
  • 可以想象,最簡(jiǎn)單的聚合物是由一種結構物單元重復多次形成一個(gè)線(xiàn)型均聚物。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan