石油以油相运移、天然气以气相运移最为有效，无需相态转变就能直接成藏。
The most effective phase of hydrocarbon migration is in the oil phase or free gas phase, which directly forms the reservoirs without changing the phases.
最后用DSC进行检测，考察了柔性链上碳原子数对介晶相态、清亮点温度和相转变温度的影响。
The influence of the number of carbon atoms in flexible spacer on their mesomorphic state, clear temperature, phase-transition temperature is studied by using of DSC.
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