Bio oil, char and gas are main products of pyrolysis.

热解的主要产物有生物油、焦炭和气体。

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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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Deconstruction at higher temperatures (300 to 600 degrees C) produces a biocrude, or bio-oil, that can be refined into gasoline or diesel.

温度再高一些的工艺（300~600摄氏度）得到的则是生物原油（biocrude或bio-oil），可进一步提炼成汽油或柴油。

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Long before we run out of the cheapest shale oils that are now fueling the current American oil boom, and long before bio-engineers convince bacteria to excrete oil, hydrocarbon engineers will perfect cheap coal-to-liquids. (For a measured technical exploration of all this, see the National Academy of Sciences report.) The latter will unleash another boom.

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"Brazil was hardly touched by the credit crunch, they have had an amazing time with oil, sugar and bio fuels, " says Bellos.

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President Obama specifically mentioned clean coal, shale oil and gas as well as well bio-fuels and renewable energy.

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