It is one of the effective methods for energy and resources comprehensive utilization to have gas drained to the ground by using gas-discharging hole in China.
利用瓦斯抽排孔把井下瓦斯预抽后排到地面，是我国目前煤矿预防瓦斯事故和进行综合利用能源的有效方法之一。
Aimed at the characteristics and stern situation of supply and demand of mineral resources in China, the importance of strengthening comprehensive utilization of mineral resources is demonstrated.
针对我国矿产资源的特点和严峻的供需形势，论证了加强矿产综合利用工作的重要性。
At present the rate of comprehensive utilization of mineral resources is still very low in China.
目前我国矿产资源综合利用率仍然很低。
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