radioactive mineral

常見例句

雙語例句

• The discovery also explains why helium is found in radioactive mineral deposits.
  這個發(fā)現(xiàn)也解釋了為什么在放射性礦渣中找到了氦。
  dict.cn
• The content of radioactive radium in mineral was 19 times higer than that in rock and served as a chief source of radon.
  礦石樣品放射性鐳含量比巖石樣品高19倍，為井下氡氣的主要來源；
• It results from cosmic rays reaching the earth from the outer space, and from the radioactive decay of mineral in the soil.
  它來自星際空間抵達(dá)地球的宇宙射線，來自土壤中礦物質(zhì)的放射性衰變。
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