六亚甲基二异氰酸酯 ( HMDI ) 可用在预聚物中代替甲苯二异氰酸酯〔TDI〕.Hexamethylene diisocyanate ( HMDI ) may be used in prepolymer, in place of TDI.柯达叙述了一种直链的活性亚甲基两当量的黄成色剂.Kodak company describes open chain reactive methylene two - equivalent yello...
However, thisunshine cleanings week's thrilling - if unsettling opportunities - cast all of that in a different light.然而, 这周你会觉得发现了一条光明的解脱之路,这令人激动不安....