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- Radium is radioactive. 镭是有辐射能的。
- Radium is a radioactive element. 镭是个放射性元素。
- Radium is still used today for curing cancer. 今天镭仍被用来治癌。
- The energy signature used is radioactive. 被用的能量信号是放射性的。
- radium is radioactive 镭是有辐射能的。
- Radium and uranium are radioactive elements. 镭和铀是放射性元素。
- Tritium is radioactive and is believed to be the main source of the major traces of 3He found in the atmosphere. 氚是放射性的,并且确信是大气中痕量3He的主要来源。
- Radioactive ray is material thing. 放射线是实际的物质。
- Some of the carbon dioxide absorbed by plants during photosynthesis is radioactive. 植物在光合作用中吸收的一些二氧化碳具有放射性。
- Viewing the subject from this angle, it can be said that the task of isolating radium is the corner-stone of the edifice of the science of radioactivity. 从这一角度来看这个问题,可以说分离镭的工作是放射性学科这一大厦的基石。
- Usually steel plants, paper mills, shipbuilding, agriculture branch is not used in the test is radioactive rays. 通常钢铁厂、造纸厂、造船厂、农科所中所用的无损检验中的射线就是放射性的。
- Viewing the subject from this angle,it can be said that the task of isolating radium is the corner-stone of the edifice of the science of radioactivity. 从这一角度来看这个问题,可以说分离镭的工作是放射性学科这一大厦的基石。
- But this isotope is radioactive and decays about six times faster than does uranium 238, which indicates that the fissile fraction was much higher in the distant past. 但是,铀235是具放射性的,而且衰变的速度比铀238快六倍,表示在古代,这个易分裂同位素的比率,比现在高得多。
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- There is positive proof that he did it. 有确切的证据证明他做了此事。
- A bowl of hot chicken soup is good for you. 喝一碗热鸡汤对你有好处。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- Swimming is the best way to tone up your body. 游泳是健体强身的最好方法。
- Radium is a chemical element. 镭是一种化学元素。
- A simple test will show if this is real gold. 简单的试验就能证明这是否是真金。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries