煤

In this article, the influence of sulfur content on the direct liquefaction reactivity of long flam coals was studied in the laboratory autoclave.

摘要： 利用实验室高压反应釜，研究了榆林横山樊河长焰煤中硫含量对煤直接加氢液化反应的影响。

Research on the Floatability of a Primary Gold Ore;2. The floatability of raw coal is in the middle degree.

结果表明，龙山燃煤煤岩类型属于光亮煤，大多数燃煤为硫分、灰分都较高的气肥煤，原煤可选性为中等可选

The research results will be of significance for coal utilization ,fluoridation pollution appreciation and control and can provide prescription for studying new fluorine determination process .

文献[1]中介绍了煤中微量元素氟的各种间接和直接的测定方法的研究进展，并对各种方法的适用性、存在的问题及测定精度进行比较分析和评价，结果表明：高温燃烧水解——氟离子选择电极法测量煤中氟具有操作简单、快

The experimental study on higher-temperature fusing properties of coal ash and materials shows: it is high ash content and low volatile matter content rather than the fusion point value that are the main factors which influence primary the temperature of liquid phase of cement raw meal.

本文通过灰熔点的实验方法，进行的煤灰及物料高温熔融性研究表明，煤灰灰熔点的高低并不是影响水泥生料液相初析温度的最主要原因，而煤中的高灰分及低挥发分却是关键因素。

Thus, through analysis and research, evaluation system and method of the piston inclination of Wiggins gasholder has been proposed, which lays the foundation for design and implementation of the online monitoring system of the piston inclination of gasholder.

为此，本文通过分析研究，提出了威金斯型煤气柜活塞倾斜度评价体系与方法，从而为煤气柜活塞倾斜度在线监测系统的设计和实施奠定了基础。

Coal gasification many, but according to the type of coal gasification to determine the techniques and equipment.

煤的气化工艺很多，但是要根据煤的种类来确定气化的工艺和设备。

It is provided as a reference for holding the pyrolysis gasification character and efficacious utilization of coal.

为掌握煤的热解气化特性及煤的有效利用提供了参考依据。

The geochemical properties of content,distribution and existence mode of As in coal are summarized.

1前言由于成煤的特殊地球化学条件，煤中富集了多种微量元素。

The concept of coal system is based on coal geology and the theory of system.

从煤地质学和系统论结合的基础上提出含煤系统的概念。

The bolting along the goaf and bottom of road under conditions of island is introduced.

介绍了在孤岛条件下沿空沿底煤巷锚杆支护技术，针对施工条件提出了切实可行的煤巷锚杆支护设计、施工工艺及监测方法。

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％。