radon
美音:[´reı´dɔn
]
英音:[´reı´dɔn
]
n.氡
难易程度:
radon为短语/超纲词汇
词形变化:
简写符号:Rn
radon
/'reɪdɒn; `redɑn/
n [U] chemical element, a radioactive gas produced by the decay of radium 氡. =>App
10 见附录10.
n [U] chemical element, a radioactive gas produced by the decay of radium 氡. =>App
10 见附录10.
radon
n[U]
[Date: 1900-2000; Origin: radium]
a radioactive gas that is used in the treatment of diseases such as cancer. It is a chemical element : symbol Rn
[Date: 1900-2000; Origin: radium]
a radioactive gas that is used in the treatment of diseases such as cancer. It is a chemical element : symbol Rn
1. Experimental data seem to indicate that the amount of radon (Rn) in the water under the surface of the Earth waxes before an earthquake.
实验数据似乎表明，地震前地下水中氡的含量会增高。
更多句子>>>
实验数据似乎表明，地震前地下水中氡的含量会增高。
更多句子>>>
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