【摘要】 阐述了反映煤质的首要指标———反射率及其测定方法的演变 ,并且以实验结果为依据对目前国内开发的自动显微光度仪的优缺点作了客观的评述更多还原

【Abstract】 This paper expatiates that the chief index-reflectance which reflects the quality of coal and the generation of its mensuration.The strongpoint and shortcoming of automatic microphotometer from our own country are also reviewed objectively by the experimental result.更多还原