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。
2
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。
3
The elemental changes of PANbased CF were mainly denitrogen besides loss of oxygen and carbon.