Barely Significant

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Among them, the concentrations of O 2 , CO, CH 4 , CO 2 , C 2 H 4 and C 2 H 6 , a total of six single gases, showed a trend of slow change to rapid growth in the process of coal temperature rise, which can effectively identify the gas release characteristics of the critical temperature, the dry cracking temperature and the pre-spontaneous combustion period, while the gas release characteristics of CO/△O 2 , CO/CO 2 , CO
highly significantqualifiedgold
The results showed highly significant improvements ( \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${p} < 0.001$$\end{document} ) across all comparisons: M1 ( t = 31.847), M2 ( t = 31.847), M3 ( t = 19.333), M4 ( t = 44.721), M5 ( t = 13.377), M6 ( t = 46.000), and M7 ( t = 42.485).