(1) 中文:镭是一种放射性元素。 英文:Radium is a radioactive element. (2) 中文:居里夫人是发现镭的科学家之一。 英文:Marie Curie was one of the scientists who discovered radium. (3) 中文:镭在医学上有一些应用,但由于其放射性,需要小心处理。 英文:Radium has some applications in medicine, but ...
16、Women there presented her with a gram ofradiumfor her campaign.(那里的妇女为了支持她的活动赠送给她一克镭。) 17、Madame Curie devoted all her time to the study ofradium.(居里夫人一生致力于镭的研究。) 18、radiumis a radioactive element.(镭是一种放射性元素。) 19、radiumis a very useful...
Discovery of Radium What is radium? Radium is a radioactive element with the chemical symbol ‘Ra’. It emits radioactive light rays which cause it to glow in the dark. In regular conditions, radium is a silvery metal. When exposed to air, it reacts to nitrogen and quickly forms a blac...
Radium is a radioactive element whose nucleus emits an alpha particle(a helium nucleus)that has a kinetic energy of about6.0×10-13J(3.7MeV).To what amount of mass is this energy equivalent? Number◻Units◻ There’s just one step...
Radium (pronounced /ˈreɪdiəm/, RAY-dee-əm) is a radioactive chemical element which has the symbol Ra and atomic number 88. Its appearance is almost pure white, but it readily oxidizes on exposure to air, turning black. Radium is an alkaline earth metal that is found in trace...
13. Radium is a radioactive element. 镭是一种放射性元素。 dict.cn 14. Radium is a very useful element. 翻译镭是一种很有用的元素。 dict.cn 15. He just implanted a radium diode. 他们刚给你植入镭二极管。 blog.sina.com.cn 16. Madame Curie discovered the element radium. 居里夫人发现了镭...
13.Radiumis a radioactive element. 镭是一种放射性元素。 dict.cn 14.Radiumis a very useful element. 翻译镭是一种很有用的元素。 dict.cn 15. He just implanted aradiumdiode. 他们刚给你植入镭二极管。 blog.sina.com.cn 16. Madame Curie discovered the elementradium. ...
- Hide/Show Examples radium/ˈreɪdɪəm/CET6 TEM4 1. N-UNCOUNTRadiumis a radioactive element which is used in the treatment of cancer. 镭
radium 词典解释 1.镭 Radium is a radioactive element which is used in the treatment of cancer. radium 英英释义 noun 1. an intensely radioactive metallic element that occurs in minute amounts in uranium ores Synonym: Raatomic number 88
Radium (Ra) is a radioactive element, found naturally occurring in the environment. Ra is a silvery- white-metallic solid @ 25℃; it tarnishes black when exposed to air. It is an alkaline earth metal; there are 33 isotopes, all of them are unstable. Radium is common Radium is a ...