解释为什么钡能形成过氧化物而铍则不能。Explain why barium forms peroxide but beryllium does not.然而铍的毒性限制了它的作用.However the toxic properties of beryllium limit its application.但如果用铝包覆铍,则可避免加工过程中及储存期间的中毒问题.Toxicity problem in manufacturing and...
The falsification of the testament [ will ] was discovered by them.他们发现这份遗嘱被 窜改 了.This led to corner cutting and - with surprising frequency - falsification of data.其结果导致投机取巧了,伪造数据资料,其频繁程度使人吃惊.Any medical investigator wo...
发动机突然反冲.The engine kicked back.警察再次开火，紧抵着反冲机构，不断向袭击他的人射击。The policeman fires again, tensed against the recoil, unleashing round after round at his assailant.我把家伙组装起来，检查了一下击发和反冲机构，装上子弹。I assembled the weapon, checked the ...