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n.[化学]镭 (Ra)
1、contradictable in a sentence───在句子中矛盾
2、bowing is the traditional───鞠躬是传统
3、satellite radio───卫星广播；卫星收音机
4、gratifications paradigm───满足范式
5、abrade means───简称
6、amateurism radio───业余无线电
7、degraded farmland───退化耕地
8、balustrade column───栏杆柱
9、doppler radar───[雷达]多普勒雷达
10、get grade───获得分数
1、About a week before, he had put a piece of radium in his coat pocket and had forgotten about it for several hours.───大约一个星期前，他将一块镭放在上衣口袋里，几个小时后才想起来。
2、She was the first to isolate pure radium, and was world renowned as the leading expert on radiation.───她以最早提炼出纯镭的第一位辐射学专家而闻名于世。
3、The matter that the Curies had discovered was radium. It looked like ordinary salt, but was one million times more radioactive than uranium.───居里夫妇所发现的物质就是镭，看起来它就像普通的食盐一样，而它的放射性却You要大一百万倍。
4、In its little receptacles there was radium visible at last, visible by its own light in the dark.───装在小小容器里的镭终于见到了，以它自身的亮光在黑暗中为人们见到了。
5、Spinning the engine backward, he took away the radium. This simple movement cured everyone.───他把发动机向后旋转，拿走了里面的镭，这个简单的动作治愈了所有的病人。
6、Women there presented her with a gram of radium for her campaign.───那里的妇女为了支持她的活动赠送给她一克镭。
7、The scientists who discovered radium did not know that it would kill them.───那些发现了镭元素的科学家，并不知道这种元素会让他们丧命。
8、Madame Curie will always be remembered as the discoverer of the element radium.───居里夫人这位镭元素的发现者，将永远为人们所怀念。
9、The radiation radius of the radioactive radium radiator in the stadium is variable.───放射性的镭散热器在体育场的辐射半径是可变的。
1、We found that pitchblende contains at least two radioactive materials, one of which, accompanying bismuth, has been given the name polonium, while the other, paired with barium, has been called radium.