coal mine dust的意思|示意

Gas, water, fire, dust, coal mine roof five kinds of typical accident fault tree diagram have been given by use of systems analysis from human, machine, environment, and management four elements.

运用系统分析方法从人、机、环境、管理四个要素出发给出瓦斯、水、火、煤尘、顶板五种煤矿典型事故的事故树图。

The density control of gas and coal dust is done through optimal allotment of the ventilation quantity in the coal mine well.

煤矿井下瓦斯和煤尘的浓度控制是通过煤矿井下通风量的优化分配实现的，是实现煤矿安全生产的关键环节。

GX-1Exploding isolation type drawing signal switch used for mining is applicable to coal mine where has explosive gas and coal dust.

GX-1矿用隔爆型拉引信号开关适用于具有煤尘和爆炸性气体的煤矿井下，作为低压开关防爆电铃或其它小型声响设备。

Stray current in coal mine underground is an important factor caused gas and coal dust explosion, which seriously threatened safety production in mines.

煤矿井下杂散电流是引起瓦斯、煤尘爆炸的一个重要起因，严重威胁到煤矿的安全生产。

Objective To monitor coal mine dust concentration and composition, study the incidence of coal worker's pneumoconiosis, and provide a scientific basis for pneumoconiosis control.

目的监测煤矿井下粉尘浓度及组成成分，研究其与煤工尘肺的发病关系，为尘肺病防制提供科学依据。

With the similar dust control measures and length of exposure to dust, the main reason of causing different coal mine incidence of pneumoconiosis was the different coalfield geology factors.

在防尘措施、接尘工龄基本相同的情况下，造成煤矿尘肺发病差异的原因主要是煤田地质因素不同。