The coalminedrainage system reliable or not is extraordinary important, it relates directly to the coalmine person, the property safety.
煤矿排水系统可靠与否事关重大,它直接关系到煤矿的人身、财产安全。
2
The pepped-up manganese then grabs and holds a variety of toxic metals and other substances that need to be cleaned up and gotten out of coalminedrainage water.
激活的锰元素会吸收大量有毒金属,还有其他需要被清理的,从煤矿地下水系统脱离出来的物质。
3
Because gas drainage is strong in 3308 workface of Chengzhuang coalmine, stop production often takes place for above-the-common.