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...
He made a remarkable recovery from a shin injury.他的胫骨伤恢复得相当不错。He sheathed the knife and strapped it to his shin.他将刀插入鞘中，绑在小腿上。He had the words "Angie loves Ian" tattooed on his left shin.他在左小腿上文了“安吉爱伊恩”几个字。...
不带宾语的动词称为不及物动词.Verbs that do not take object are called intransitive verbs.带宾语的动词称为及物动词.Verbs that take object are called transitive verbs.但是当介词放在从句末尾时,作为介词宾语的关系代词可以用that并且可以省略.I know the young couple from whose house th...
Not far away were other geothermal wellheads, their natural pressurized steam deflected into huge insulated pipes.不远处是另几口地热井, 它们的天然加压蒸汽输进了巨大的绝热管道.All experimental investigations about the geothermal conditions are based ...
I read Germaine Greer's article in the March issue with particular interest.我饶有兴致地阅读了杰曼·格里尔在三月那期发表的文章。I live in a village near to Germaine Greer and know whereabouts she lives.我住在杰曼·格里尔家附近的村子里，知道她具体住在哪儿。Germaine Gre...
The track snaked perilously upwards.这条小道蜿蜒而上，很危险。The road snaked through forested mountains...道路在林间蜿蜒延伸。The road snaked through forested mountains, past the village of San Antonio.这条路在林木覆盖的山上蜿蜒前行，经过圣安东尼奥村。A train snaked ...
Officials were self-congratulatory about how well the day had gone.官员们对那一天的顺利度过自鸣得意。Scores of congratulatory telegrams and letters greeted Franklin on his return.富兰克林一回来，就收到了好几十封贺电和贺信。He sent Kim a congratulatory letter....