1.
A research on mine gas inflow regularity during gas extraction in contiguous protective coal seams and gas control
近距离保护层开采瓦斯涌出规律及治理研究
2.
An analysis of source of mine gas in faces in extracontiguous protective seams and a study on optimization of Y-Γ ventilation system
超近距离保护层工作面瓦斯来源分析及Y+Γ型通风系统优化研究
3.
Tunneling short distance protector prevention coal and gas prominent engineering research
近距离保护层采场巷道掘进的防治煤与瓦斯突出技术研究
4.
The Optimizing Design of Bolting Support Multi-coal Seams and Little Intervals Roadway;
近距离煤层群巷道锚杆支护优化设计
5.
Study on the Support Technology of the Rodaway in the Loose Coal Seam Below Close Range Goaf;
近距离采空区下松散煤层巷道支护技术研究
6.
Research on Pressure Relieved and Permeability Enhanced Caused by Exploitation of the Far Distance Lower Protective Coal Seam
远距离下保护层开采卸压增透特性研究
7.
protection in remote control system
远距离控制系统保护
8.
overreach distance protection equipment
过范围距离保护装置
9.
blocking distance protection equipment
闭锁式距离保护装置
10.
integrated circuit distance relay device
集成电路距离保护装置
11.
Research on the reasonable distance when the close seams joint mining
近距离煤层联合开采合理错距的研究
12.
at long [short, close] range
在远 [近] 距离
13.
Research of the Microcomputer Distance Protection in Single Source and Short Distance Transmission Line;
单电源短距离输电线微机距离保护装置的研制
14.
Forecast Model of Spontaneous Combustion in Goaf of Close Distance Coal Seams;
近距离煤层采空区自然发火预测模型
15.
Research of near range overmining of Qinghemen coal mine
清河门矿近距离煤层群上行开采技术
16.
Research on the roadway stability under closed distance seam group
近距离煤层群开采下巷道稳定性研究
17.
macro teleconverter
增距式微距附加镜﹝使标准镜头变成微距而保留最近封焦距离﹞
18.
Roadway Mechanized Excavation Technology for the Close Distance Seams for the Composite Lay Roof under Goaf
近距离煤层采空下复合层顶板巷道综掘技术