煤

Plastic is made,using water which is a natural resource inexhaustible and available everywhere,coal which can be mined through automatic and mechanical processed at less cost and lime which can be obtained from the calcinations of lime stone widely present in nature.

塑料是由水、煤和石灰制成的。水是取之不尽的到处可以获得的天然资源；煤是用自动化和机械化的方法开采的，成本较低；石灰是由煅烧自然界中广泛存在的石灰石得来的。

In the gasifying oven, there are coal feeding port and fuel gas feeding port at the top and the bottom, an inclined plane which drops coal grains and accumulates them onto the bottom, and the ventilating duct with opening over the fuel gas feeding port. It has also steam feeding port at the bottom, resultant gas outlet on the side and waste gas outlet at the upper part.

它是在气化炉的上部和底部分别设有煤供给口和燃气供给口，并设有使投入的煤颗粒落下、堆积到底部上的倾斜面，以及开口端在燃气供给口的上方、在炉内朝上延伸的通风管；还在气化炉的下部和侧部分别设置蒸汽供给口和生成气体排出口，并在上部设置废气排出口。

The effects of steam/coal ratio and type of coal on gasification process were studied.

以空气和水蒸气为气化剂，在循环流化床煤气化热态试验台上进行了神华、龙口和大同煤的气化试验，研究了蒸汽煤比和煤种对气化过程的影响。

Index errors of steam coal blending are normal school and not very obvious.

建立了动力配煤新模型，给出了配煤中不同基之间的变换关系。

The facilities selection and process system for steam coal separation and steam coal blending problem are discussed and analyzed in this paper.

阐述并分析了动力煤分选的设备选择，工艺系统及动力配煤问

It is important to reduce the span of the hard roof to avoid its impact load on supports. However, at longwall top coal caving face, the periodical weight of roof is a main factor that crushes the top coal, which is beneficial to the top coal recovery. How to use the roof pressure safely is of crucial importance in top coal caving. Based on field monitoring, theoretical analysis of strata movement, the numerical model of compound structure of hard roof stepped cantilever and the top coal cantilever beam is built, and the parameters of the model are also determined. The elasto-plastic finite element method is used to analyze the effect of hard coal fracture under the abutment pressure of hard roof, and the cracking coefficient is defined according to the stress state of the element.

通过对岩层移动的现场观测，建立了&两硬&条件综放采场台阶悬臂—悬臂梁组合的煤岩组合结构力学模型，并以此煤岩结构为基础，建立&两硬&条件综放采场顶煤压裂的有限元数值模型，分析了坚硬顶板不同来压步距对坚硬顶煤的压裂效应，并确定了合理的支架阻力，从而对坚硬顶板进行有效的控制，消除坚硬项板对采场的冲击隐患，同时保证采场矿压对坚硬顶煤的有效压裂，达到提高顶煤回收率之目的，由此形成了坚硬顶煤、坚硬顶板条件下综放采场围岩控制的基本理论和方法。

The experimental results show that sodium chloride can reduce sulfur dioxide emission in coal combustion process and enhance desulfurization.

实验结果表明，NaCl的存在延长了SO2在煤样中的停留时间，抑制了SO2的排放，有利于在煤燃烧过程中进行SO2的脱除。

According to supporting system with steel sheet pile of this foundation pit works checking calculation is made in order to ensure the construction safety and smooth running of construction.

对某电厂工程输煤系统通廊基坑支护工程的具体情况进行了介绍，探讨了输煤系统地段的地质情况，对该工程地下通廊基坑钢板桩支护进行了验算，以保证基坑工程施工安全，从而保证施工顺利进行。

In the ancient times, the Chinese people gained deep understanding of the coal properties such as the combustibility, efflorescence, self-burning, sulphur of coal, gas poisoning and gas in underground mines.

古代中国人对煤炭性能的认识不断深入，从煤的可燃性、风化、自燃，到煤的含硫性乃至煤气中毒、井下瓦斯，均有深刻的认识。

Indonesian coal ; burning ; hot test ; sedimentation stove ; thermal balance

印尼煤；混煤；燃烧；热态试验；沉降炉；热天平

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％。