第四纪红土土壤全氮含量较高，但是其碱解氮含量比花岗岩母质土壤和紫色砂页岩土壤低。
Quaternary red clay total nitrogen content was highest, but the available nitrogen content was lower than Granite soil and Purple sandy shale soil.
以实验为依据，分析了油页岩的热解机理及特性，并充分考虑了油页岩中挥发分在整个热解过程的作用，在此基础上建立了与油页岩固有热解特性相适应的热解模型。
Based on the pyrolysis experiment, the pyrolysis mechanism and properties of oil shale were analyzed, and the effect of volatile release in whole pyrolysis process of oil shale was fully considered.
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