Coal miners have to work under the ground.

煤矿工人须在地下工作。

The coal miners have come out for about two weeks.

煤矿工人已罢工约两周了。

The geologist proves up a coal deposits.

地质学家探明了一个煤矿的藏量。

Some colliers squatted upon their hunkers against the wall.

有几个煤矿工人靠著墙蹲著。

The auxiliary shaft topsoil adopted ordinary construction and drainages in hygrometric well.

屯留煤矿副井井筒表土段采用普通法施工,利用井外降水井疏干降水。

They are mining for coal.

他们在开采煤矿。

The coal miners struck.

煤矿工人罢工了。

Coal mine rockbolt shoring current situation,necessity and significance having discussed rockbolt shoring parameter optimization design combining with leaping forward.

结合跃进煤矿锚杆支护现状,探讨了锚杆支护参数优化设计的必重。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该消声装置结简单,对主通风机的失影响小,防尘、防潮及降噪效果明显,可广泛的应用于煤矿主通风机的消声降噪。

The harnessing of noise and smust to boiler are studied,pugging and ventilation are adopted to harnest noise of fan.

通过对煤矿锅炉噪声治理烟尘治理的研究,阐述了通过采用隔声罩机械通风冷却设施对引风机鼓风机的降噪治理。

For maintenance convenience,many electric switches for mine are adopted pinboard construction in order to reduce effect of coal mine production.

为了维修方便,许多矿用电气开关采用插接式结,以减少对煤矿生产的影响。

Excavate coal is primary production link in coal mine production, therefor, Weaving excavate coal working face supersedure plan has instructional meaning.

采煤是煤矿生产中的主生产环节,因而编制采煤工作面接替计划对煤矿生产具有指导意义。

The shortwall ladder prop mining method namely strip extraction has been more extensively applied currently in small coal mine of Shaanxi province.

短壁刀柱采煤法即条带开采,目前在陕西省小煤矿开采中较广泛应用。

The paper intrduces the exchange CENTREX, dispatching equipment and the com-bination of them, and puts forward the methods of improving coalmining communication capabili-ty.

将交换机CENTREX功能用于煤矿调度机,从而提高煤矿通信的综合能。

The problems existed in electric supply protection for coal mine are introduced,and the features and result of the computerisation reform plan are provided.

介绍了煤矿供电保护存在的问题,提出了微机化改造方案的特点、效果等。

Large scale planar geological mapping, profiling survey and microfabric analyses proved that lithophysa structure was developed in rhyolite in Yingcheng coal mine area, Jiutai City.

摘通过大比例尺平面地质续图、剖面测量显微组分析，九台营城煤矿区流纹岩中石泡造发育。

Aiming at difficulties in supporting dilatable soft rock roadway, control method was put forward to control effectively deformation and failure of dilatable soft rock roadway in Hongmiao Colliery.

针对红庙煤矿膨胀软岩巷道存在的难题，给出了针对的巷道控制方案，并在实践中得到了验证，有效地控制了红庙煤矿膨胀软岩巷道的变形破坏。

For the purpose of the development and utilization of the argilla re sources in Huaibei, the activation of coal-argilla taken from Zhuzhuang coal mi ne was studied as representative sample.

为开发利用淮北矿区高岭土资源,以该区朱庄煤矿煤系高岭土为代表样品进行高岭土的活化研究。