Under relatively low temperature, coal and oxygen compounds into the transient products with no gas produced.So the mass of the sample increases.And the transient products can adsorb more oxygen.

 
  • 在较低加热温度下,煤样同氧气发生化合反应形成不稳定的中间产物使煤的质量增大,同时这些中间产物具有更强的氧气吸附能力。
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