查询词典 coal

In this paper, hazard theory is combined with coal mine gas accident and coal mine hazard is put forward, analyzing gas accident hazard by the three class of hazard.

本文将危险源理论和煤矿瓦斯事故相结合，提出煤矿危险源这一全新概念，用三类危险源思想来分析瓦斯事故危险源。

The preparation methods of sulfonated coal and factors such as sulfonation time, sulfonation temperature and ratio of acid to coal etc.

试验研究了褐煤制磺化煤的制备方法及磺化温度、磺化时间、酸煤比等因素对产物磺化煤的离子交换活性的影响。

Shuangbai County teak coal mine rock Adit sub-head coal and gas outburst accident occurred.

双柏县麻栗树煤矿岩子头矿井平洞发生煤与瓦斯突出事故。

The influence of volatile content and admix ratio upon combustion performance of blended coal has been preliminarily analysed, it is suggusted that the equivalent volatile content value can be used as important basis for determining operational parameters during the time of burning blended coal.

采用热天平和一维火焰炉对单一煤及其混煤的着火、燃烧、燃尽以及结渣特性等进行了试验研究，初步分析了挥发分含量及掺配比对混煤燃烧性能的影响，提出等效挥发分值可作为混煤燃烧时确定运行参数的重要依据。

The results indicate that the surface area of coal is related to the coal particle size, the maceral content and the adsorbate used.

在上述工作基础上，选用孔隙结构发达的大雁褐煤作为原料，探讨了制备空分用炭分子筛的可能性。

With coal indirect liquefaction is exemple, dimensions is 5 million tons / year manufacturing unit, aerification is in with coal 2200-2500 10 thousand tons.

以煤间接液化为例，规模为500万吨/年的生产装置，气化用煤在2200-2500万吨。由此可见，我国在。。。。。。

Afforcement of management of coal exploit is urgent,improvement of coal exploiting efficiency and management level is in need of effective technology.

中文摘要：加强煤炭开采管理迫在眉睫，提高煤炭开采效率和管理水平急需有效的技术支持。

SH is the largest coastal oil and coal transportation, so as to油运, Coal as the core business, recently Shougang International Trade and Engineering Company signed a bulk ore affreightment opened the imported iron ore transport market, the contract period of 15 years, since the second half of 2009, the total contract for 37 million tons.

是最大的沿海石油和煤炭的运输，以油运为核心的煤业务，最近首钢国际贸易工程公司签署了散装铁矿石包运开辟了进口铁矿石运输市场，15年的合约期内，自2009年下半年，37个亿吨的合同。

The paper presents a more detailed discussion of the significance and present situation of coal separation and the latest development of air heavy medium fluidized bed coal separation technology.

详细讨论了选煤的意义和现状以及空气重介质流化床选煤技术目前的发展。

Air brick which is made of cement、clay、coal ash and coal waste has been the main architecture wall-material of development these years,with it's characters as light-quality、heat insulation and sound insulation,even more,it mades proper use of flotsams as well as saving soil-source.

空心砖是近年来发展的主要建筑墙体材料，它主要由水泥、粘土、粉煤灰、煤矸石等材料制作，质量轻，隔热隔音好，尤其种既合理利用了废料又节省土地资源。

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％。