查询词典 coal mining

So it is very important and essential to accurately predict the influence of coal mining and take enough safety measures in advance.

因此对采煤造成的影响作出比较准确的预计，并预先采取足够的安全措施，是非常重要和必要的。

In the groups of coal mining equipments , the roadheader has played a very important role .

在现用的煤岩掘进设备中，掘进机已成为一种很重要的井下设备。

It is indicated that using the grade 2 coal mining permissible water-gel explosive at condign work face are provided with better blasting results and higher safety, and the arrangement of combining big cutting-borehole with small rest borehole can attain better blasting efficiency and smooth basting result.

试验表明：在条件允许的工作面使用煤矿许用二级水胶炸药具有较优的爆破效果和较高的安全性：采用大直径掏槽炮眼和小直径其它炮眼相结合的炮眼布置形式，可达到较好爆破效率和光爆效果。

In coal mining induetry, it is important to ascertain the conductance coefficient in the calculation of cable section .

在煤炭企业电缆截面积选择计算当中，如何确定电导系数的大小，是一个不能忽视的问题。

At the same time, the technology of coal mining also developer quickly, compare with before mine exploitation is much more centralize, production and new building mine are increasing accretion. Because of this the character of mine size, exploitation deep, assistant exaltation and gas effuse are gradually increasing.

同时，采煤技术也迅速发展，矿井开采的集中化程度日益提高，生产和新建矿井的井型日益增大，逐渐形成井田尺寸小、开采深度大、辅助提升任务大和瓦斯涌出量增加等特点。

Slope Greening Net Net gabion, gabion cage, hexagonal wire mesh, such as heavy-duty precision fabricated metal products, mainly used in: coal, mining, petrochemical, food, food, salt industry, environmental protection and other industries.

边坡绿化网石笼网，石笼网箱，重型六角网等精密金属制品，主要用于：煤炭、矿山、石油化工、粮食、食品、盐业、环保等行业。

There was an increasing demand for engine power due to industrial development. As early as the 2nd century BC, the ancient Greeks invented an engine that was powered by the reaction from spurting steam; in 1690, the Frenchman Barben invented the first piston steam engine. On the basis of his predecessors' work and with his own hard work and numerous trials and failures, James Watt invented the steam engine with connecting rod, flywheel and centrifugal speed governor in 1782.In 1784, the British government granted a patent to James Watt for producing steam engines, which signified that man had entered the age of the steam engine and also significantly expedited the beginning of the Industrial Revolution in 18th century Europe. By the 1830s, steam engines had been widely used in various sectors such as textile, metallurgy, coal mining and transportation; for example, the American Robert Fulton invented the steamboat and the Englishman George Stephenson invented the steam locomotive.

随着社会的进步，社会由农业时代进入工业时代后，对全用手工操作已十分不满足，人们随着工业发展对动力的需求日益突出，瓦特在前人研究蒸汽的基础上，甚至早在公元前二世纪，古希腊人创造的一种利用蒸汽喷射的反作用的发动机，以及1690年法国人巴比首先发明第一台活塞式蒸气机等，刻苦钻研，反复实验，经历无数次挫折和失败，终于在1782年发明了具有连杆、飞轮和离心调速器的双动作蒸气机，使之成为了可以实用的蒸气机。1784年英国政府授予瓦特以制造蒸气机的专利证书，这标志着人类进入了蒸气机时代，有力地促进了欧洲18世纪的产业革命。

One of the coal mining equipment for the enterprise products, high-power electric haulage shearer 75 percent market share in domestic or international reputation.

其中煤炭采掘设备为企业的主导产品，大功率电牵引采煤机市场占有率达到75%，在国内和国际上享有盛誉。

It is helpful in practical design of water inrush in coal mining.

以上结果可为实际矿井采煤防突水设计提供参考。

Kirkcaldy was once a pocket of prosperity, but by the time Brown was coming of age in the 1960s, the industries that gave the town its wealth – coal mining and two giant linoleum factories- were collapsing .

克科底镇曾经风光一时，不过在20世纪60年代布朗迈人成年之际，为镇上带来财富的煤矿业和两座巨型油地毡工厂竟逐渐衰落。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。