您要查找的是不是：
- Keywords coal mine;bolting support;yow &line space; 煤巷;锚杆支护;间排距;
- Keywords coal mine;sidewall cracking;mechanism; 煤矿;井壁破坏;机理;
- Keywords coal mine;electric mtor;energy saving; 煤矿;电动机;节能;
- Keywords coal mine;?dustproof;?method; 煤矿;防尘;方法;
- Keywords coal mine;catalytic sensor;sulphuretted hydrogen;poison; 煤矿;催化元件;硫化氢;毒性;
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- Keywords Coal mine Succor technology Laneway penetration; 煤矿;救灾技术;地面透巷;
- Keywords coal mine;signal;telemetering;system;carrier wave; 煤矿;信号;遥测;系统;载波;
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- Keywords coal mine;coal quality research;proximate analysis; 矿区;煤质研究;工业分析;
- Keywords Coal mine Safety supervision OSH legislation; 关键词煤矿;安全监察;安全立法;
- Keywords coal mine;ventilator;remote monitoring;intelligence; 煤矿;通风机;远程监控;智能;
- Keywords coal mining;roof managemenet;actuality; 关键词煤矿;顶板管理;现状;
- Keywords coal mine;longwall face;microseismic;strata fracture;monitoring; 煤矿;长壁工作面;微地震;岩层破裂;监测;
- Keywords coal mine;safety science and technology;developing strategics; 煤矿;安全科技;发展策略;
- Keywords coal mine blasting;misfire;blasting equipment;blasting network; 煤矿拒爆;拒爆;爆破器材;爆破网路;
- They underwrote the coal mine's bonds. 他们同意买下该煤矿的未认购的股票。
- obvs 明显地（=obviously）
- There is a coal mine near my home town. 我的家乡附近有一个煤矿。
- Keywords coal floor water_irruption;forecasting method;Jiaozuo coal mine area; 底板岩溶突水;突水预测;焦作矿区;
