查询词典 coal mine

It can measure the brake clearance of hoister of coal mine,track the brake actions and display the clearance value in real time,and alarm when the clearance value goes beyond the demand of the coal mine security rules.

介绍一种基于单片机的闸间隙检测技术，利用它可以实现对煤矿提升机制动闸的间隙测量，实时跟踪闸的动作，显示闸间隙值，并在提升机制动闸的间隙超出煤矿安全规程要求时报警指示。

In order to minimize the number of coal-mine accidents, firstly, the control of major gas outburst accidents should be given to priority; secondly, coal-mine accident casualty and megaton death rate should be decreased.

减少煤矿安全事故，一是要重点控制瓦斯等重特大事故的发生，二是要有效地减少煤矿死亡人数，降低百万吨死亡率。

The drainage system is one of the most power expenditure systems in the produce of the coal mine. If the drainage system is controlled effectively, and it becomes a high-performance, low-power dissipation, oecumenical, reliable system, it will economize the cost of the produce of the coal mine effectively.

排水系统是煤矿生产的耗电大户，如果有效地控制排水系统，使其高效低耗、经济可靠地运行，也是降低煤炭生产成本的有效途径。

Ecosystem damage in a large opencast coal mine: A case study on pingshuo surface coal mine, China.

大型露天煤矿生态系统受损研究：以平朔露天煤矿为例。

According to the technological characteristics and the real conditions of Open Pit Coal Mine of Heidaigou, planning of the reclamation of Open Pit Coal Mine of Heidaigou was researched.

根据黑岱沟露天煤矿工艺特点和矿山具体条件，对黑岱沟露天煤矿的土地复垦规划进行了研究。

Self-developed a variety of small hydraulic pump station and manually moving fast or columns such as product, is coal mine pit operations and the importance of safety in production equipment and tools, with a safe and reliable high-performance mobile and flexible low-light characteristics of simple well received by the vast number of coal mine workers welcome.

自行研制的各种小型液压移动泵站及手动快速升柱器等产品，是煤矿井下支护作业和安全生产的重要装备与工具，具有高效低耗安全可靠移动灵活轻便操作简单的特点，深受广大煤矿工作者的欢迎。

LongKou Beizao coal mine is the first mine which can excavate coal under the sea in our country.

北皂煤矿是我国第一个进行海下采煤的矿井。

Edit comrades: I am a local small coal mine safety management, deep coal mine accidents occurred frequently.

编辑同志：我是一家地方小型煤矿的安全管理人员，深感煤矿事故发生频繁。

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。

Analyzed the causes of "2.22" gas explosion disaster at Tunlan Coal Mine which led the death of 78 people.It was the breezeless condition of No.1 crossheading at 12403 working face in the coal mine's southern No.4 panel region that made the local gas accumulated to the explosive concentration.It was the electrical switch which lost its explosionproof ability in No.1 crossheading that ignited the gas.

分析了死亡78人的屯兰煤矿&2.22&特别重大瓦斯爆炸事故原因：该矿南四盘区12403工作面1号联络巷处于微风无风状态，造成瓦斯局部积聚达到爆炸浓度，1号联络巷内的电气开关失爆，引爆瓦斯。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48