查询词典 coal

Thermogravimetry is applied to analyze the combustion characteristics and combustion kinetic mechanisms of three kinds of stone coal , and the classify attribute of stone coal is investigated.

采用热重分析方法对3种石煤的燃烧特性和燃烧动力学进行研究，并对石煤的类属进行了探讨。

There are stone coal in southern China, it is a high-rot peat ash in the fuel to deprived areas, stone coal is also capable of being used as fuel.

中国南方还有石煤，它是一种灰分很高的腐泥煤，在燃料缺乏的地区，石煤也可就地当作燃料使用。

Experiment results show that the leaching rate of vanadium in roasted stone coal in water is lower when mass fraction of calcium in stone coal is higher.

试验发现，对来自同一矿区的矿样，当其中钙元素质量分数较高时，熟料中高价钒的水浸出率较低。

Stone coal is a low-grade coal, with low heat value, high sulfur and ash contents.

循环流化床燃烧[2]作为一种高效的洁净煤技术，近年发展较快，该技术的一大优点就是适宜燃用石煤、垃圾之类的低热值燃料。

Our products can be used sand, stone, coal slag, fly ash, coal gangue, all kinds of tail slag, ceramic, perlite, and other industrial waste processing into a variety of new wall materials, high efficiency, energy saving, environmental protection, rich source of raw materials , The production process is simple, less investment and quick, broad applicability and broad prospects.

本厂产品均可采用砂、石、煤渣、粉煤灰、煤矸石、各种尾矿渣、陶粒、珍珠岩等工业废料加工成各种新型墙体材料，高效、节能、环保，原料来源丰富，生产工艺简便，投资少，见效快，适用性广，前景广阔。

Of coal, as contrasted with coal obtained from a strip mine .

关于煤，与从露天矿中开采的煤相对的。

And it will be prospected in controlling coal-mining-induced subsidence in other big coal mining areas.

该成果对其它大型矿区的采煤沉陷控制也将具有一定的参考价值和推广应用前景。

Detailed researches are implemented to behavior of superincumbent strata in mining 45 degree coal seams using horizontal section top-coal caving in this paper.

本文针对45°特厚煤层水平分段放顶煤开采后的上覆岩层移动破坏规律进行了深入研究，指出45°特厚煤层开采后老顶破断后在一定层位形成了沿倾斜方向的铰接岩梁结构，即倾斜岩梁。

Theoretical analysis for the surface properties of coal-pyrite and mass susceptibilities of different kinds of coal-pyrite crystal forms and coats are studied.

对煤系黄铁矿的表面特性进行了理论分析，并测定了煤及煤系黄铁矿的磁化率。

According to the actual working conditions of bolting-shotcrete supporting in coal-mine tunnel,the working mechanism of different buckets was studied,their merits and demerits were analysed,and the double-crank grab bucket with assistant linkage was proved to be an ideal choice of grabbing materials in coal-mine tunnel because its motion trace was definite and symmetric and occupied lesser space.

从巷道锚喷支护中物料抓取的实际作业环境出发，对拟采用的几种抓斗的工作机理进行了分析研究，比较了各方案的优缺点，指出辅助连杆的双曲柄抓斗的运动轨迹确定、对称，且具有在竖直方向上占用空间最小的特点，是井下巷道施工中物料抓取的理想选择，这种设计方法能够为相关抓取装置的设计起到参考作用。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。