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1·The carbon isotope value distribution of ethane in the Tarim Basin.

图4塔里木盆地天然气乙烷碳同位素分布图fig。

2·Cracked gas in high-temperature causes methane carbon isotope to heavy.

高温裂解气的生成造成甲烷碳同位素变重的假象。

3·Carbon isotope in soil carbonates is an important paleoclimate data carrier.

土壤碳酸盐中碳稳定同位素是记录古气候变化信息的重要载体。

4·The composition of carbon isotope has the characteristics of carbon of deep seated source.

在碳同位素组成上具深源碳特征。

5·Carbon isotopes show a pattern, but it is somewhat more difficult to interpret than the oxygen isotope pattern.

碳同位素显示的格局，但它是较为困难的解释比氧同位素模式。

6·The isotope tracer method presents the advanced method of carbon isotope, nitrogen isotope, oxygen isotope and Pb tracer.

同位素示踪法着重阐述了较先进的碳、氮、氧和铅同位素的示踪。

7·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；

8·According to analysis of natural gas ingredient and CH4 carbon isotope, it is proven that the natural gas of this area is superficial.

根据天然气成分分析和CH4碳同位素资料，论证了该区天然气为浅层天然气。

9·The wax content of the crude oil is high, its methane carbon isotope could be reversed, indicating its multi-stage pool-forming origin.

油气藏含蜡量高，甲烷碳同位素具反转现象，说明其为多期成藏的产物。

10·The carbon isotope shifts during Upper Permian in the South China drop gradually, and such phenomena may correspond to sea level change.

华南晚二叠世的碳同位素变化曲线是逐渐降低的，与全球海平面变化趋势相一致。