Objective To understand the status of dust hazard in the new large coal mines and provide the basis for the prevention of pneumoconiosis.
目的了解新建大型煤矿作业场所粉尘危害状况，为今后开展煤矿尘肺防治工作提供依据。
This paper describes the main problems of ventilation systems in large coal mines and it puts forwards a feasible transformation proposal.
本文论述了大型矿井通风系统存在的主要问题及可行的改造方案。
It deals with the principles, mathematic model, block diagram, function of FVP-77 computer pro - gram, and possibility of calculating ventilation system in large coal mines.
介绍了FVP- 77电算程序的原理、数模、框图和功能。并说明了它解算大型及特大型矿井通风系统的可行性。
The main task of large state-owned coal mines is still to improve system circumstances.
改善制度环境，仍然是国有大型煤矿的主要任务。
So, large state-owned coal mines can not satisfy the basic requirements to accomplish modern human resources administration.
国有大型煤矿不具备实行现代人力资源管理的基本条件。
High power station, subway, tunnel, high-rise buildings, large industrial and mining enterprises, oil fields, coal mines and other places.
较高的发电站、地铁、隧道、高层建筑、大型工矿企业、油田、煤矿等场所。
High power station, subway, tunnel, high-rise buildings, large industrial and mining enterprises, oil fields, coal mines and other places.
较高的发电站、地铁、隧道、高层建筑、大型工矿企业、油田、煤矿等场所。
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