radioactivity
听听怎么读
英 [ˌreɪdɪəʊæk'tɪvətɪ]
美 [ˌredioækˈtɪvɪti]
是什么意思
放射（性）；辐射能；
英英释义
radioactivity[ ,reidiəuæk'tivəti ]
- n.the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
同义词：radiation
学习怎么用
双语例句
用作名词(n.)
- Radioactivity is a special quality of radium.
放射性是镭的一种特性。 - 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。
权威例句
Air chemistry and radioactivityAir Chemistry And RadioactivityAir chemistry and radioactivityAtmospheric Composition. (Book Reviews: Air Chemistry and Radioactivity)Stratospheric-tropospheric exchange based on radioactivity, ozone and potential vorticityFluorographic detection of radioactivity in polyacrylamide gels with the water-soluble fluor, sodium salicylate.The Preparation of 131I-Labeled Human Growth Hormone of High Specific RadioactivityTHE PREPARATION OF 131I-LABELLED HUMAN GROWTH HORMONE OF HIGH SPECIFIC RADIOACTIVITYTHE PREPARATION OF I-131-LABELLED HUMAN GROWTH HORMONE OF HIGH SPECIFIC RADIOACTIVITYTHE PREPARATION OF ¹³¹I-LABELED HUMAN GROWTH HORMONE OF HIGH SPECIFIC RADIOACTIVITY
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