【摘要】 本文通过XRD（X射线衍射）对7种不同煤化程度煤的结构进行了分析，得到了上述样品的微晶参数数据。结果表明，随着煤化程度的增加，微晶参数呈现规律性变化。这一工作对研究煤的结构很有意义。更多还原

【Abstract】 Seven coals of different ranks were studied by x-ray diffraction.Crystallite parameters were obtained. These parameters changed regularly. It is worthful for people to know and study coal structure.更多还原