radioactivity

名词放射（性）; 辐射能

名词

1. 放射性：为了购置1克镭,她又一次通过美国的麦隆内夫人,在美国募集了购置1克镭所需要的款项. 1932年,居里夫人的伟大梦想实了,她到波兰主持了华沙镭研究院的揭幕典礼. ①放射性(radioactivity) 原子核自发地放射出各种射线的现象,如α、β、γ放射性等.

2. 放射现象：十九世纪末,科学家发现了放射现象(Radioactivity),由此揭开了人类探索原子结构的序幕. 当时一些科学家已提出原子能可以发展出大型武器,但也有科学家认为这只是镜花水月的空想. 一九三八年十二月,德国人汉恩(OttoHahn)在柏林的实验室意外地把铀原子分裂,

3. 辐射：不知不觉地开启了核物理的时代. 沥青油矿是一种包含铀元素的矿物质,铀的含量越高,放射线就越多,所以铀是一种重要的元素. 波兰物理学家玛丽.居里(MarieCurie,1867-1934)创造出辐射(radioactivity)这个术语用来描述这些射线的发射.

1. radioactivity在线翻译

1. Investment will also be allocated to build national zones for protecting ecological functions, upgrading the management capacity of national nature reserves and harnessing radioactivity.

2. 911查询·英语单词

2. Nuclear power has been very unpopular in Germany ever since radioactivity from the 1986 Chernobyl disaster drifted across the country.

3. The most attractive exhibit is the radioactivity measuring device by Nobel Prize winners Pierre and Marie Curie.

4. The experts fretted that terrorists might gather loose nuclear materials for a " dirty bomb " that could devastate an American city by spreading lethal radioactivity.

5. TEPCO spokesman Junichi Matsumoto said some air may escape through the entrance but that radioactivity is low enough to cause no danger to health.

6. radioactivity

6. Workers at the Beijing Radiation Safety Technology Center conduct tests to detect the level of radioactivity in the air on Tuesday.

7. The level of radioactivity has remained stable and initial assessment indicated the increase was caused by leakage from a fuel rod.

8. The second team had to abort their mission as radioactivity almost exceeded the limit at midway.

9. Radioactivity inside the reactor buildings is too high for workers to take measurements there.

10. Levels of radioactivity have risen sharply in seawater near the plant in northern Japan, signaling the possibility of new leaks at the facility.

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