所以要是你获得了放射性元素的正确类型矿石后，等上数十亿年（甚至数万亿年）就能获得地下隐藏着的大量氦！
So if you get an ore of the right type of radioactive element, and you wait millions and millions (or even billions) of years, you make a giant underground store of helium !
铅同位素结果研究表明，穆家庄铜矿矿石铅和近矿围岩岩石铅具有富含放射性成因铅的特点。
Lead isotope research shows that lead in ores of Mujiazhuang copper deposit and near ore country rocks is characterized by being rich in radioactive lead.
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；
The content of radioactive radium in mineral was 19 times higer than that in rock and served as a chief source of radon.
碳有两个非放射性的同位素，在太阳系的物质中，包括在大多数的陨石矿石中，它们的混合比例是众所周知的。
Carbon has two non-radioactive isotopes, and in material from the solar system, including most meteoritic minerals, these are mixed in a well-known ratio.
通过对堆放在北仑港口的进口铁矿石进行放射性水平测量，研究了北仑港口进口铁矿石的放射性污染状况。
The radioactive pollution of iron ore imported via Beilun port was studied by measuring the imported iron ore deposited at Beilun port.
通过对堆放在北仑港口的进口铁矿石进行放射性水平测量，研究了北仑港口进口铁矿石的放射性污染状况。
The radioactive pollution of iron ore imported via Beilun port was studied by measuring the imported iron ore deposited at Beilun port.
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