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...
你现在还和当初玩卡丁车的时候,一样严肃 吗 ?Q you as serious asas you are now you were driving karts?王平: 我最喜欢看卡丁车大赛.Wang Ping: I like to watch the go - kart race most.我几乎总是觉得自己像是个赛车,却开在卡丁车的跑道上.I almost always feel like a race car on a go - c...
Methods 28 cases of comminuted proximal humeral fractures were treated with LCP.方法应用LCP治疗肱骨近端粉碎性骨折28例.ObjectiveTo explore the for dysfunctions in elbow and extension after internal fixation for humeral intercondylar frac...
鼠类繁殖力很强.Mice are prolific breeders.他利用蚜虫繁殖力资料说明了抗生作用对虫口动态的理论效应.He used aphid fecundity data to elucidate the theoretical effects of antibiosis on insect population dynamics.就最广的意义而言,繁殖力一直被用来评价农药的影响.Productivity has been ...
人们纷纷送礼物给那些战罢归来的英雄.The people rained gifts upon the heroes returning from the war.归来的战士们受到了热烈的欢迎.The returning soldiers enjoyed a rousing reception.剑桥发出了召唤, 他象一只归来的信鸽似的作出响应.Cambridge had called; he had responded like a ho...
The silver-leaved varieties of cyclamen are not quite as hardy.银叶仙客来品种不太耐寒。An elm is a type of large tall broad - leaved tree.榆树是一种高大的阔叶树.Though rather lean in the stalks you be a green - leaved old man still.你的老杆儿虽然枯啦,你...
Viscosity overwhelms the smallest eddies and converts their energy into heat.粘性制服了最小的旋涡而将其能量转换为热.But their work appears to merge in the study of large eddies.但在大旋涡的研究上,他们的工作看来却殊途同归.Eddies of dust swirled in the road.路上尘埃...