矿山主井提升系统是矿山生产的咽喉部分，一旦发生故障将会直接影响生产。
The main shaft hoisting system is the most important part in the mine, if some accidents happen in the mine hoisting system, the results is to affect production.
2005年该矿对主井提升及运输系统进行了技术改造。
The hoisting and transport systems of its main shaft are reformed in 2005.
2005年该矿对主井提升及运输系统进行了技术改造。
The hoisting and transport systems of its main shaft are reformed in 2005.
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