The fluids carry a lot of dissolved solids and hydrocarbon in free convection.

自由对流的流体在运动过程中搬运了大量的矿物质和烃类。

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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.

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。

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The free radical reaction is the main mechanism of hydrocarbon generation from organic matter.

有机质生烃以自由基反应机制为主。

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Paradoxically, Iran's assertion, strongly repudiated by the Bush administration, that its nuclear-based electricity will free hydrocarbon supplies for export, has an inherent logic (notwithstanding the suspicion aroused by Iran's nuclear strategy).

ECONOMIST: Harnessing nuclear power