radioactive mineral
常见例句
- 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。
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.
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。 返回 radioactive mineral