adsorption methane content的用法和样例：
- Is the only production of high methane content of cyano-dithio enterprises.
- Coal bed methane content is fairly high which threatened safety mining in some areas in Shuangyashan mining area.
- The results show that the COD removal rate of the wastewater that was treated by USAB can reach as high as 55% and the methane content is 54.27%.
- Methane content is high and spontaneous combustion occurred frequently in Yangquan coal mines, which have a serious influence upon the safe production in the mines.