Age determination data indicate episodic crystallization of uranium minerals.年龄测定数据表明,铀矿物有着不同期的结晶.To make the fissile material, he needs to develop an ability to enrich uranium.为了得到分裂物质，他需要发展浓缩铀的能力。A graben creates a fav...
It was actually used for enriching uranium to weapons-grade levels.实际上，它是用来将铀浓缩以制造武器。Enriched uranium is a key component of a nuclear weapon.浓缩铀是核武器的关键组成部分。Uranium is soluble in sea water.铀可溶解于海水。...
Crabs scuttle along the muddy bank.几只螃蟹沿着泥泞的河堤快速横行。As we walked along the seashore we saw lots of tiny crabs.我们在海岸上散步时看到很多小蟹.The fish and crabs scavenge for decaying tissue.鱼和蟹搜寻腐烂的组织为食....
电刀是一种末端执行安装在手腕成员.An electrocautery end effector is mounted to the wrist member.本设计以氩离子电刀配件设计为题.This assignment is mainly the design the argon ion electric knife.提出了一种有效易行的高频电刀波峰因子检测系统的软、硬件设计方案.Puts forward an effective a...
He looked as if he had glued the rakish beard on to his solemn face.他看上去就象是把流云般的胡须贴在他庄重的脸上一样.He was a serious young man, not rakish or loud - voiced like the others.他是个规规矩矩的青年, 不象其它小伙子那样流里流气或大叫大嚷.Wild flowers standed sid...
I like to keep going. I hate to sit still.我喜欢一直有事情做，讨厌一动不动地坐着。Things were difficult, and we needed her wages to keep going.日子很艰难，我们要靠她的工资来维持生活。I was shouting: "Keep going, keep going!"我喊着：“坚持，坚持！”...
Support for monogamy and marriage was strongest among the professional classes.专业人士阶层最支持一夫一妻制。McLennan knew only three forms of marriage: polygyny, polyandry and monogamy.麦克伦南只知道三种婚姻形式: 一夫多妻制, 一妻多夫制和个体婚制.to practice mono...