所加的反应物可以是二烯烃 、 环二烯烃.The feed reactants can be alkadienes, cycloalkadienes.包含两个双键的化合物叫做二烯烃.Compounds containing two double bonds are called dienes.与二烯烃橡胶相比, EPDM的双键很少.Compared with diolefine rubber, EPDM has less double b...
A series of arrows points the way to the modest grave of Andrei Sakharov.一连串的箭头指示着通往安德烈·萨哈罗夫的朴素的墓地的路。Andrei's description of policy classes describe their power as being derived from their granularity and orthogonal...
He admitted a lack of motivation and a feeling of sloth.他承认自己缺乏动力，总想犯懒。Money is my motivation.金钱是我的动力。Gross's skill in motivation looked in doubt when his side began the second half badly.球队下半场开局不利，看来格洛斯给队员鼓劲的技巧值得怀疑...
If they're wise, they can put to use , and appear smarter.如果他们明智, 他们就能学以致用, 使自己变得更游刃有余.People came out in smarter clothes to promenade along the front.人们穿上更加时髦漂亮的衣服，沿着海滨散步。The smartest Lamarckian individual was far ...