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- mine ventilation shaft 风井
- surface mine ventilation shaft 地面风井
- Ride the train to the ventilation shaft. 乘火车到达通风井找到柱状物体。
- A ventilating shaft, as in a mine. （比如矿井中的）上风井
- Huainan Banji coal mine introduces precasting in Main Shaft and ventilation shaft,and drilling shaft lining is precast construction in ground. 淮南板集煤矿主井与风井采用钻井法凿井,钻井井壁在地面预制施工。
- Construction of Mine Ventilation System in Zhaojin (Group) Co. 招金(集团)公司矿井通风系统建设。
- Referring to the fundamental principle of thermodynamics, the upcast shaft was taken as a special tunnel in mine ventilation system,and the air in the air flow could not be taken as the ideal gas. 以热力学基本原理为依据,将回风井看作是矿井通风系统中的一条特殊巷道,指出其风流中的空气不能看作理想气体,推导出了测算矿井外部漏风率的正确方法。
- This text introduces the application of theodolite in the directional measure technique in Qidong ventilation shaft. 简要介绍了陀螺经纬仪在定向测量中的应用和祁东风井联系测量技术。
- The inverter reconstyunction of mine ventilator. 矿用通风机的变频改造。
- a ventilation shaft through which air enters a mine 煤矿里能让空气流通的一个通道
- This paper puts forward the nonplanar data model to solve the difficult question of 3d topology of mine ventil... 提出采用非平面数据模型来解决通风网络中的三维拓扑问题;
- The technical measures and structure,applied principles of blastproof of ventilation shaft at excavating face,specific operational method and prospective effect are described. 介绍了掘进工作面防炮崩风筒的主要技术措施及技术结构、应用原理、采用这项技术的具体操作方法及达到的预期效果。
- To introduce the grouting methode,the course of excavation and the result of application after the ventilation shaft had been divulged yellow clay of the overburden. 介绍了生产矿井回风风井透溃黄泥后,注浆方法、掘进补碹过程及应用效果。
- In the paper,the utilizations on natural energy resources in underground mine ventilation are discussed. 通过实例,对矿井通风中自然能源利用问题进行了分析和论述。
- Several problems were introduced which easily be ignored in mine ventilation design. 介绍了矿井通风设计中易被忽视的几个问题。
- MVSS has thegreat power of mine ventilation network solution and personate,intelligentize.Greate re... MVSS具有强大的网络分风解算能力和拟人化与智能化特点,大大地降低了现场员工对专业知识的要求。
- ventilation shaft through which air leaves a mine. 煤矿上用来疏通空气的通风井。
- The optimal mine ventilation is influenced on multitudinous quota and the pacing factor synthesis. 矿井通风系统优选是受众多定量和定性因素综合的影响。
- In the program of BP network mine ventilation evaluation system, the author proposes the ATN mode BP network. 在利用BP网络对矿井通风系统进行评判预警的软件中，作者提出了以反正切函数为激励函数的ATN型BP网络。
- The grey characteristic of the mine ventilation system is including the randomicity and fuzzy. 为了更好的管理小青的通风系统,保障矿井的安全生产。
