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- In view of characteristics of karst in coal mine underground, it established a specific karst model, and synthesized reverberation profiles by forward modeling. 针对矿井下可能存在的岩溶特征建立了一个具体的岩溶数学模型，并通过正演模拟合成了反射剖面图。
- The coal mine underground micro seismic monitoring system which is made by Shandong University of Science and Technology is used to monitor the behavior of overburden strata of mining face. 通过对监测到的微地震事件定位计算,证实微地震发展演化与采场覆岩破坏密切相关。
- The paper introduces 3 main kinds of locomotive powered braking and their mechanical characteristics. Their applications in rubber-tyred locomotives in coal mine underground has unique advantages. 介绍了机车动力制动的3种主要形式和各自的机械特性，应用在煤矿井下胶套轮机车上，有其独到的优点。
- The test bench for coal mine underground tunnel drilling rig 煤矿坑道钻机性能检测试验台
- Application of CST control soft starting system in coal mine underground CST可控软启动系统在煤矿井下的应用
- Study of an adaptive filter applying to communication in coal mine underground 一种适用于井下通信的自适应滤波器研究
- The Design of Brakes for the Coal Mine Underground Rubber-tyred Vehicle 煤矿井下胶轮车辆用制动器的设计
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- A way to keep economic operation for chief draining pump in coal mine underground 煤矿井下主排水泵保持经济运行的途径
- The Brake Type-Choosing for The Coal Mine Underground Light Trackless Rubber-tyred Locomotive 煤矿井下轻型胶轮车制动器的选型
- The difficult technical problems of mobile communication in coal mine underground and solving scheme 矿井移动通信技术难题及解决方案探讨
- Development and Application of Coal Mine Underground Power Supply Safety Monitoring Station 煤矿井下供电安全监测站的开发和应用
- Researches and Application of Exploring Technology on Coal Mine Underground Multi-level Fire Area 煤矿地下多层火区探测技术研究与应用
- Study on the structure of coal mine underground integrated service digital network 煤矿井下综合业务数字网网络结构的研究
- Coal mining has always been a dangerous occupation. 采煤向来是一种危险职业。
- General bituminous coal mining; Motor freight. 一般烟煤开采；汽车货运。
- They underwrote the coal mine's bonds. 他们同意买下该煤矿的未认购的股票。
- The landscape was destroyed by coal mining. 自然景观由于挖煤而受到了破坏。
- There is a coal mine near my home town. 我的家乡附近有一个煤矿。
