1.
A ventilating shaft, as in a mine.
（比如矿井中的）上风井
2.
Rapid Construction Technology of Freezing Well-wide Shaft of New Shanghai No.1 Ventilation Shaft Mine
新上海一号矿风井全井冻结井筒快速施工技术
3.
Research on the optimizing technology of ventilation system renovation for multi-airshaft mine
多风井矿井通风系统优化改造技术研究
4.
A passage for drawing up smoke or air.
上风井，上风烟道发散烟或空气的通道
5.
East Air Shaft Main Ventilator Online Monitoring Research and Application
东风井主通风机在线监控研究与应用
6.
Technology of Father Airshaft Water Burst Flooded Well of Baixiangshan Iron Mine
白象山铁矿风井突水淹井治理技术研究
7.
Analysis of Roadway Supporting Technology Used in Wind Shaft Station of ZhuJi Thousand Meters Mine
朱集矿千米深井风井车场巷道支护技术及分析
8.
Construction technique of central ventilating shaft and second auxilary shaft freezing engineering in Xieqiao mine
谢桥矿中央风井及二副井冻结工程施工技术
9.
supply with a brattice, to ventilate mines.
装上矿井通风用的风幛。
10.
Lining Slipform Construction Technology of Sending and Exhausting Single-shaft
单井送排风式竖井衬砌滑模施工技术
11.
Calculation on Effective Air Quantity of Mixing New Mind in Mine Series Ventilation New Wind-doped
矿井串联通风掺新风的有效风量计算
12.
mine static head
矿井通风系统静压头
13.
Standard for the equipment of ventilative safety of colliery
矿井通风安全装备标准
14.
Perhaps that's his style,cautious,sedate and methodical.
也许，这就是基辛格的风格，严谨、庄重、井井有条。
15.
The risks are great because no one can guarantee he can find oil every time he sinks a well.
风险大是因为没人能保证在勘探时能井井见油。
16.
Quick Roadway Excavation with Hoisting by Air-return Shaft
利用进回风立井改绞实现矿井快速掘进
17.
Affecting factors research on the risks of deep water drilling operation in West Africa
西非深水JDZ-2-1井钻井工程整体风险分析
18.
By determining the ventilation resistance of the mine shaft ventilation system, it is found that the ventilation resistance in return airways is particularly large and the ventilation degree is middle.
通过对矿井通风系统进行通风阻力测定,发现矿井回风段通风阻力过大且通风难易程度为中等。