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.
并采用傅立叶变换红外光谱分析仪（FTIR）分析了局部放电引起的硅橡胶表面结构的变化。
And the change of silicone rubber surface structure by the Fourier Transform Infrared Spectroscopy (FTIR) is analyzed.
并采用傅立叶变换红外光谱分析仪（FTIR）分析了局部放电引起的硅橡胶表面结构的变化。
And the change of silicone rubber surface structure by the Fourier Transform Infrared Spectroscopy (FTIR) is analyzed.
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