Crackedgas 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。
2
By the result we conduct the conclusion: The dry crackedgas possess the NH_3, which can be detected by the NH_3 detecting-pipe quantitatively;
结果表明：净化干气中有氨气的存在，用气体检测管可以检测定量；
3
The Carboniferous natural gas in eastern Sichuan is of crackedgas which had been accumulated, originally as oil, in Liangping-Changshou palaeohigh belt that was formed by Indosinian movement.