Spectrum technology in coal quality detection has become a research hotspot with the maturing of spectral technology and the continuous development of spectral imager. This article mainly analyzed and summarized the progress and research status of scholars at home and abroad based on the coal quality index (moisture, ash content, volatile matter, fixed carbon and sulfur content).According to the coal quality index, we demonstrated spectrum technology has considerable prospects in coal quality testing by analysis the application of spectrum technology in detection of other material's corresponding index.

In this paper, we use panel data of 13 cities in the Beijing-Tianjin-Hebei region from 2012 to 2020 to analyses the economic level development adopting the entropy method, and then by a Tobit panel regression model to analyze the impact of education on the development of economic quality. It turns out that: (1) Relationship between education level and economic quality development in the Beijing-Tianjin-Hebei area is an inverted "U" shaped; (2) the overall distribution present a trend of rapid development of education and faster economic quality development in the Beijing-Tianjin region and slower development in the Hebei district; (3) finally, on the basis of the measured relationship between education and economic quality development , from the outcome of the modulation variables, the horizontal of transportation, the level of Internet advancement, the level of manufacturing employment on the level of economic mass development in the Beijing-Tianjin-Hebei region play a role in promoting. In view of the above, practical suggestions put forward to optimize the allocation of educational resources in the Beijing-Tianjin-Hebei region and to boost harmonized high-quality economic development.