钫的半衰期是22分钟.The half - life of francium is 22 minutes.钫是碱金属中密度最大的,具有放射性.Francium is the densest of the Alkali Metals and also radioactive.ㄗ欧竦托庞闷兰洞 钫叩氖谐.What will happen when monetarypolicy is tighter , with interest r...
Once production wraps on the show's seventh season, Kiefer Sutherland will return to additional 30 days.一旦《24小时》第七季结束, 他又得回到监狱度过剩下的30天.Kiefer was just one of the artists who had studied under Beuys in the early Sixt...
The ultimate aim is to expand the network further.最终目的是为了进一步拓展该网络。I owned a bookshop and desired to expand the business.我拥有一家书店，想要扩大业务。Metals expand when they are heated.金属受热会膨胀。...
排气中最大量的排放物是在怠速和低速运行时产生的.The greatest amount of exhaust emissions are produced at idle and during low - speed operation.澳大利亚的野生动植物也遭受到汽车有毒排放物的侵害.The Australian wild life also suffers from the cars'toxic emissions.所有汽...