1) coal electric drill switch
煤电钻开关
1.
The on-off ability of coal electric drill switch is an important index of its performance,and so the design adopts the measuring system composed of advanced Segma 60 digital oscillograph and PLC program controlling pneumatic driving mechanism.
煤电钻开关通断能力是其性能的主要指标,设计采用了先进的Segma 60数字示波器工作站构成的测量系统和PLC程序控制气动驱动机构。
2) coal electronic drill
煤电钻
1.
By the test analysis methods of simulating field production,we study on the working instability of integrated protector for coal electronic drill.
通过模拟现场生产实际的实验分析方法,对煤电钻综合保护装置工作不稳定性进行研究,得出了综合保护装置工作不稳定的主要原因,在于使用的载频短路保护技术特性不稳定的重要结论;而影响载频短路保护技术特性的主要原因,在于电源供电网络参数通过主变压器反馈,改变了载频振荡器的谐振槽路参数,谐振频率发生变化,迫使振荡器振幅降低,甚至停振。
3) electric coal drill
煤电钻
1.
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
2.
In this paper, the structure and operation mode of an electric coal drill, temporarily named MSZ-12C with hydrau-electric control is introduced.
介绍了一种暂名为MSZ 12C型的水电联控式煤电钻的结构及其工作方式。
4) coal electric drill
煤电钻
1.
According to the enlarging embrasure and making use of ZM12T and ZM12D coal electric drill,develops a type of ZMJ-1 equipment of determining anti_cutting intension of coal and rock used in coal_mine underground,and educes dependence formula of anti_cutting intension of coal and rock and the height of measuring curve.
根据扩钻炮眼的方法 ,利用ZM12T和ZM12D煤电钻 ,研制一台ZMJ— 1型煤岩抗截强度井下测定装置 ,并推导出煤岩抗截强度与实测曲线高度的关系
2.
The problems in leakage protection and executive circuit of synthetical protection set in coal electric drill have been analyzed and calculated.
通过分析和计算说明老式煤电钻综合保护装置在漏电保护和执行电路中存在的问题。
3.
Carrier frequency short circuit protection of integrated protector for coal electric drill was analysed by doing experiment,proves protect action of carrier friquency is regular when the length of cable is shorter than 200m.
针对目前煤电钻综合保护装置中的载频短路保护电路进行实验分析,证明当电缆长度小于200 m时载频短路保护动作基本正常;当电缆长度大于200 m时,保护动作不正常,并且保护动作受电缆的截面积影响程度将更加明显。
5) electrical coal drill
电动煤钻
6) the development of coal-fired electricity
煤电开发
1.
After the establishment of pilot area, through the development of coal-fired electricity, the region markedly improves financial income and makes remarkable achievements in economic development.
试验区建立后,通过煤电开发,全区财政收入明显提高,经济发展取得显著成绩。
补充资料：电钻
利用电做动力的钻孔机。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条