coal mine methane

• 煤层气

Coal mine methane的用法和样例：

例句

1. It is a new way of the utilization of coal bed gas.
   为井下抽放煤层气的利用提出了一条新的途径。
2. Abstract There is coalseam methane in coalbed and coal bearing sequences in the study area.
   在煤层和煤系地层中，产生并赋存着煤层气。