Hexamethylene diisocyanate ( HMDI ) may be used in prepolymer, in place of TDI.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〕.Polyurethane elastomers based on glycols ( PEA, PPG PTMG ) , diisocyanate ( TDI ) and chain extender...
Polyurethane elastomers based on glycols ( PEA, PPG PTMG ) , diisocyanate ( TDI ) and chain extender ( E - 300 ) were prepared.以多元醇 ( PEA, PPG,PTMG ),PDI, E300为原料,制备了 PU 弹性体.Polyether - type isocyanate prepolymers are pr...
The cello is a member of the violin family.大提琴是提琴家族的一员.She plays the cello in an orchestra.她在管弦乐队中演奏大提琴.His cello technique is unique.他的大提琴(演奏)技巧是独一无二的....
The track led them to a huddle of barns and outbuildings.那条路把他们带到了一片杂乱拥挤的谷仓和库房.Farmers cut the hay, fork it on to a cart and then store it in barns.农夫们割下干草，用叉子把草叉到车上，然后拉到谷仓贮存。...great red barns in empty fallow fields...在...