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...
有外星人拜访了他们。They have been visited by creatures from outer space.吉姆在这部电影里是个外星人.Jim is an alien in this film.有人见到过外星人 吗 ?Has anybody ever seen any beings from outer space?...
He felt this form of address was not too good.他觉得这种称呼不大好.What form of address should one use when writing to a bishop?给主教写信应该怎样称呼?Used as a form of address and salutation by soldiers to a victorious Roman general.凯旋将军士兵对...
Mars has an insubstantial atmosphere, consisting almost entirely of carbon dioxide.火星的大气层极其稀薄，几乎全部由二氧化碳构成。David Fincher paints from a palette consisting almost exclusively of grey and mud brown.戴维·芬彻几乎只用灰色和土褐色作画。A couple...
心头涌起一阵强烈的感情，模糊了他的判断力。A tide of emotion rose and clouded his judgement.他很有见识，能保持正确的判断力。He was clear-sighted enough to keep a sense of perspective.她一直都有很强的直觉判断力。She always had a lot of common sense....
这一词使一大批生物界后起之秀兴趣倍增.This word added zest to a new group of biologists.杰克对生物界的现象感兴趣, 像毛虫变成蝴蝶.Jack is interested in biological phenomena, such as caterpillars turning into butterflies.我上述的例子是野外生物界的例外.My examples above a few...