radioactivity
英 [ˌreɪ.di.əʊ.ækˈtɪv.ə.ti]
美 [ˌreɪ.di.oʊ.ækˈtɪv.ə.t̬i]
- n. 放射性；[核] 放射能力；[核] 放射现象
使用频率:
英语词源
- radioactivity (n.)
- 1899, from French radioactivité, coined 1898 by the Curies; see radioactive.
权威例句
- 1. the process of decontaminating areas exposed to radioactivity
- 清除受放射污染地区有害物质的过程
- 2. The soil contains 30 times the acceptable level of radioactivity.
- 这片土壤受到了高于标准30倍的辐射.
- 3. The site was found to be contaminated by radioactivity.
- 发现此地受放射线污染.
- 4. They argued that only a negligible rise in atmosphere radioactivity resulted from the test.
- 他们辩解说,由这次试验所造成的大气层放射活动的增加是微不足道的.
- 5. The level of radioactivity in the soil was found to be above recommended limits.
- 土壤的辐射水平被发现超过规定的限度.
相关单词
广而告之
1一秒钟记单词小学英语单词记背神器英语一二三四五六年级人教版英语词汇汇总表单词记背神器 单词记忆书单词词汇速记强化训练
【推荐理由】赠运费险，热门商品
【现价】27.9
【下单链接】38￥ CZ3457 5OArdvEMFvn￥