And the heavier oxygen from a natural process that left more of the light isotope in the part of the nebula that made the sun.
重量较大的氧来自某种自然过程，在此过程中，大部分的轻同位素留在了形成太阳的部分星云中。
Scientists say the excess heavy nitrogen could have come from a comet. And the heavier oxygen from a natural process that left more of the light isotope in the part of the nebula that made the sun.
科学家认为重氮来自一颗彗星，而重氧则是来自行星形成的自然过程，这一过程把更轻的氧同位素留在了星云中，形成了太阳。
The rare gas isotope geochemical analyses also support that there is a genetic association between the light rare earth element mineralization and mantle processes.
稀有气体同位素地球化学研究也在一定程度上揭示了牦牛坪轻稀土矿化与地幔过程之间存在着成因关系。
We systematically calculated the isotope distributions of limiting temperatures for a series of nuclei from light to heavy nuclei, and obtain a thermal stability line for hot nuclei.
系统地计算了从轻到重的一系列元素极限温度的同位素分布，并从中抽取出热核的热稳定曲线。
And the heavier oxygen from a natural process that left more of the light isotope in the part of the nebula that made the sun. So we are made of star stuff.
重量较大的氧来自某种自然过程，在此过程中，大部分的轻同位素留在了形成太阳的部分星云中。
And the heavier oxygen from a natural process that left more of the light isotope in the part of the nebula that made the sun.
自然过程形成的重氧元素从星云中脱离，星云中部分的轻氧元素形成了太阳。
The gases are characterized by rich light carbon isotope in methane and rich heavy carbon isotope in heavy hydrocarbons (C_2, -C_4).
该区的煤成气以甲烷碳同位素偏轻、重烃气体碳同位素偏重为特征；
The gases are characterized by rich light carbon isotope in methane and rich heavy carbon isotope in heavy hydrocarbons (C_2, -C_4).
该区的煤成气以甲烷碳同位素偏轻、重烃气体碳同位素偏重为特征；
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