煤

KEN CAPSTICK, National Union of Miners: What they would say was that in America, for instance, coal produced at the pit head was cheaper than coal produced at the pit head here.

KEN CAPSTICK，全国矿工工会：他们要说的是美国产的煤，例如，比英国产的煤便宜。

Coal electric drill is the one of the implements of production to excave coal in the pit .The install environment of coal electric drill and power supply system is odious .

煤电钻是井下采掘工作的主要生产工具之一，煤电钻及其供电系统安装环境劣，与工作人员接触频繁，故障率高。

Polarized microscope is employed to study the optical structure of pyrolyzed substrance of the modified coal tar pitch.

采用偏光显微镜研究DVB改性煤沥青的光学结构；采用 FT- IR和元素分析研究改性煤沥青的热解过程。

Medium temperature pitch mixed into coal coking test was carried out in test coking oven.

利用试验焦炉进行了中温沥青配煤炼焦试验，结果表明，中温沥青在配煤炼焦时可以起到粘结剂的作用，配入适量的中温沥青后焦炭质量明显提高。

Objective To discuss death cause of coal worker pneumoconiosis,so as to provide evidence for tertiary prevention of CWP.

目的 探讨煤工尘肺患者死亡规律及主要死亡原因，为进一步开展煤矿尘肺的三级预防提供理论依据。

This paper Puts forward the four main parameters of the Permeability classification for coal mass es, that is,the fractal dimension of the cracks in coal mass es,the number of the cracks in one meter's characteristic scale, the conducting water coefficient of coal samples and its Porousness; and founds the mathematical pattern of the complex judgement by fuzzy sets.

提出了进行煤体渗流特性分类的四个主要指标，即煤体裂隙分布的分形维数D、特征尺度L＝1m的裂隙条数N、煤样导水系数T和煤的孔隙率η等；建立了煤体渗流特性模糊数学综合评价的数学模型；根据煤层注水工程应用的实际情况。

Since 2004, Beijing has replaced 94,000 pot-bellied coal stoves with efficient electric heaters, eliminating the filth that came from chimneys burning roughly 100,000 tons of coal a year.

从2004年开始，北京已取缔了94000个煤火炉。高热效的电热供暖器，使得以前每年因燃烧约100，000吨的煤而产生的煤烟，在北京胡同的烟囱里消失。

This article analyses existing problem of electric power system of the movement transformer substation - power shovel of Huo coal group open coal mine and the theory of this system.

本文分析了霍煤集团露天煤矿现在的移动变电站—电铲供电系统存在的问题，设计出一套科学合理的新供电系统，为霍煤集团的发展提供可靠的电力保障。

The coal and gas outburst conditions are mainly determined by gas pressure gradient and coal shear stress.

煤与瓦斯突出的条件是由煤基多孔介质中瓦斯压力梯度的大小和煤体固体骨架的抗剪强度大小所决定。

Taking a coal reservoir problem for a certain unit for the heating in the winter under the condition that there was a fluctuation area of the coal prices as an example, its pure strategy as solution and venture problem were studied.

最后，以煤价在一定范围内波动情况下的某单位冬季取暖用煤贮量的决策为例，对其灰数势意义下的纯策略解及其风险问题进行了研究。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。