If, however, they are subjected instead to pyrolysis-a process of controlled burning in a low-oxygen atmosphere-the result is charcoal, a substance that is mostly elemental carbon.

但如果经过高温分解—在低氧环境下有控制的燃烧—它将会形成木炭，其大部分是永久碳。

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The carbon-oxygen log, elemental capture spectroscopy log, pulsed neutron spectroscopy log, aluminum activation log and oxygen activation log are all examples of activation logs.

碳氧比测井、元素俘获能谱测井、脉冲中子能谱测井、铝活化测井以及氧活化测井都属于活化测井。

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The elemental changes of PANbased CF were mainly denitrogen besides loss of oxygen and carbon.

PAN基炭纤维在活化过程中的元素变化主要以脱氮为主，其次为氧、碳；

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If, however, they are subjected instead to pyrolysis a process of controlled burning in a low-oxygen atmosphere the result is charcoal, a substance that is mostly elemental carbon.

ECONOMIST: Biochar could enrich soils and cut greenhouse gases as well