The heat breaks the biomass down into a charcoal-like solid and the bio-oil, giving off some gas in the process.

这种情况下，加热会把生物原料变成木炭似的固体物质和生物原油，同时释放某些气体。

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But so can geothermal energy production and other parts of the oil and gas production process.

但地热能和其他石油和天然气能源才得以开采。

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In the process, oil is top gas (often reduced pressure), chemical is butadiene unit, the torch gas recovery system, oil and chemical are used.

工艺上用的，石油是塔顶气(常减压)，化工是丁二烯装置，火炬气回收系统，石油和化工均采用过。

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As background, hydraulic fracturing is a multi-step process commonly used in oil and natural gas drilling to bolster eventual production from wells.

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"The results seen today demonstrate that collaborative science based initiatives like this panel process can succeed - even on issues as complex as oil and gas development, " said Aleksey Knizhnikov from WWF-Russia in a statement.

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Chevron's bid to increase enormously the Soviet Union's marketable energy output (in terms of oil and, as an unavoidable part of the recovery process, of gas) clearly is at cross-purposes with this alliance policy.

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