常見例句用作名詞 (n.)They are synthesized by the reaction of a polyester polyol, or polyether polyol, with an aromatic or aliphatic isocyanate.他們由一種聚酯多羥基化合物或聚醚多羥基化合物與另一種芳香或脂肪族異氰酸鹽的反應(yīng)而合成。Diglycerin is a polyol consisting of two molecules of glycerol bonded by an ether linkage.雙甘油是兩分子甘油由一個(gè)醚鍵聯(lián)接構(gòu)成的多羥基化合物。 返回 polyol