Through nitrosation , hydrogenate reducion, and acylate three steps, the yield surpass 80 % for the diethyl malonate.收率相对于丙二酸二乙酯达到了80%以上.The necessary material of 2 - ( 2 - methoethyl ) acetaldehyde diethyl acetal was sy...
I expect you're champing at the bit, so we'll get things going as soon as we can.我希望你努力打开局面，这样我们就能尽快把事情做起来。He was champing with rage.他愤怒得咬牙切齿.The horse was champing the bit.这匹马格格地咬着马嚼子.The boys were champing to...
恐怖的死人照片gruesome pictures of dead bodies他见到死人吓得毛骨悚然.The sight of the dead man made his hair stand on end.这么做,可坑死人了.It will kill me to do it this way....
你帮不上忙，反倒会碍事。You would be more of a hind-rance than a help.他的脆弱反倒让他更加讨人喜欢。His vulnerability makes him even more lovable.她对这一指控的矢口否认,反倒更使人相信这一指控是真的.Her denials of this charge served merely to lend it credence....
另外, 在指套式传感器的结构和形状方面也做了一些探讨.In addition, we studied how to improve structure and shape fingertip - sensor.包不毁不开不毁不开是指套在册不梢不开背外背的包不开纸.Package jackets jackets refers to the book cover the outside envelope paper.指套式脉搏血氧仪体积小,...