radioactive mineral

常见例句

双语例句

• The discovery also explains why helium is found in radioactive mineral deposits.
  这个发现也解释了为什么在放射性矿渣中找到了氦。
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• The content of radioactive radium in mineral was 19 times higer than that in rock and served as a chief source of radon.
  矿石样品放射性镭含量比岩石样品高19倍，为井下氡气的主要来源；
• It results from cosmic rays reaching the earth from the outer space, and from the radioactive decay of mineral in the soil.
  它来自星际空间抵达地球的宇宙射线，来自土壤中矿物质的放射性衰变。
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