开展了改性前后煤表面的傅立叶红外光谱分析，结果证明，煤表面电磁改性具有时间效应，电磁场不能永久地改变煤的内部基团微观结构。
The FTIR analysis of surfaces of tested anthracites suggests that the induced modification is time dependent and can not permanently change the surface microstructure.
开展了改性前后煤表面的傅立叶红外光谱分析，结果证明，煤表面电磁改性具有时间效应，电磁场不能永久地改变煤的内部基团微观结构。
The FTIR analysis of surfaces of tested anthracites suggests that the induced modification is time dependent and can not permanently change the surface microstructure.
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