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- For coring crowns,electric coal drill bits,coal cutting picks,cone drill bits and scraping knife bitts,used in geological prospecting,coal mining and oil well boring. 适用于地质勘探、取心钻头、电煤钻、截煤机齿、石油牙轮钻和刮刀钻头。
- Electrical Coal Drill Earth Leakage Protection Design Method 基于单片机的煤电钻漏电保护设计
- The coal seam hydraulic drill can replace coal electric drill,of coal seam composed of this gear motor will replace electric coal drill,and will be widely used for drilling of coal face. 以乳化液为工作介质的煤层液压钻可取代煤电钻,广泛用于采煤工作面的煤壁钻孔工作。
- Application of Switching Limited-followed Technique in Synthetic Protection of Electrical Coal Drill 转换式有限跟随技术在煤电钻综保中的应用
- New electric leakage protection device of electric coal drill 一种新型的煤电钻漏电保护装置
- Problems and Countermeasures of Electric Coal Drill Comprehensive Device 煤电钻综合装置的问题及对策
- New - style quick interruption versatile protector of electric coal drill 新型快速断电煤电钻综合保护装置
- Development of comprehensive protective device of electric coal drill motor 煤电钻电动机综合保护装置的研制
- Keywords water prospecting and drainage;electric coal drill;goaf water ponding; 探放水;煤电钻;采空区积水;
- electrical coal drill 电动煤钻
- Manufacture and application of external spraying water-electric interlock wet type electric coal drill 外喷雾水电联锁湿式煤电钻的研制及应用
- Technical Probe into Electric Coal Drill in Prospectingand Drainage of Abandoned Mine Water 煤电钻技术在探放老空水中的应用
- Effect of Voltage Fluctuation on Comprehensive Protection of Electric Coal Drill and Probing into It's Resolve Ways 电压波动对煤电钻综保的影响及解决途径的探讨
- Keywords electric coal drill;electric leakage protection;shortcircuit protection;quick interruption; 煤电钻;漏电保护;短路保护;快速断电;
- Application of Electric Coal Drill in Prospecting and Discharging Accumulated Water in Mine Goaf with Narrow Coal Curtain 煤电钻在探放窄隔离煤柱采空区积水中的应用
- electric coal drill 煤电钻
- Be he a civil engineer or an electrical engineer? 他是土木工程师还是电气工程师？
- Reduced demand for electricity coal in Qinhuangdao coal prices may be some adjustments, could be a catalyst for increased thermal power unit. 发电用煤需求减少，秦皇岛煤价可能出现一定调整，可能成为火电股上涨的催化剂。
- There are some electrical apparatus in the room. 房间里有些电器。
- There is a fault in the electrical system. 电路系统出了故障。
