id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-1437	Wang, Shiwei; Qiao, Wei	Research on Gas Content Determination Method of Coal Mine Closed Core	2022	6	.pdf	application/pdf	3611	151	63	Where, V is coal sample gas desorption capacity;t is desorption time;k is coefficient. 0 1 2 3 4( ) aQ V V V V V M Q      (1) 15 Where, Q is gas content of tested coal samples,m3/t; 0V is coal sample gas loss,mL; 1V is gas desorption capacity of coal sample in airtight state,mL; 2V is underground atmospheric pressure natural desorption gas volume,mL; 3V is the amount of natural desorption gas at atmospheric pressure on the ground,mL; 4V is ground crushing natural gas desorption,mL; M is coal sample quality,g; aQ is amount of non-desorbable gas at atmospheric pressure,m3/t. 3.2.	cache/ajst-1437.pdf	txt/ajst-1437.txt