If we are a very professional high - energy physicists, using electron - positron collider experiments.如果我们是个非常专业的 高能 物理学家, 用电子对撞机做实验.It uses the collider is the world biggest particle accelerator.它所用对撞机是世界最大粒子加速器.But no...
She doubted that the accident could have been avoided.她不认为那场意外本可以避免。Some of them doubted the feasibility of the proposal.有些人怀疑这一提议的可行性.They doubted whether all this work would pay off.他们怀疑这样干是否划得来....
Diacid has been got using diethylene glycol as decomposition agent of adduct.采用二甘醇作为加合物的分解剂,得到了二元酸.DTPA ( diethylene triamine penta - aceticacid )二乙烯三胺五醋酸 ( 有机螯合剂 )It is testified that the depolymerized products are tere...