... meteoritic iron 陨铁 meteoritic material 流星体 meteoritic abundance 陨石丰度 ...
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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.
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。
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