查询词典 welted seam

Numerical simulation of water injection into coal seam throughlong drill hole and determination of its reasonable parameters

用有限元数值模拟方法求解了煤层注水二维、三维非定常渗流方程，用该数值计算模型结合具体实例，主要分析了工艺参数中注水压力、时间和钻孔间距与湿润范围的动态变化关系，给出了选取合理的注水工艺参数的计算公式。

It realizes the function of mine lane visulization and the visulization of Geologic structure, strata structure and burden condition of coal seam through exploration drill hole and parameters.

文中给出了矿山地层表面可视化模型的可行性算法，通过建立模型，可以较准确的描述矿山的地貌以及等高线的分布；通过比较目前地层表面的生成方法，采用不规则三角网生成算法，生成地层表面，同时利用规则三角网的方法来模拟三维地层表面，实现矿井三维模型的旋转、变换等功能。

By the measures such as measuring the risk tendency of underground pressure eruption, evaluating risk index of underground pressure eruption, observing electromagnetic radiation, water injection in coal seam, long drill hole blasting, roof broken in gob area etc., realized safe coal production.

近年来鹤岗矿业集团公司的南部5个煤矿相继发生冲击地压现象，且造成不同程度的财产损失，通过采用冲击危险倾向性测试、冲击危险指数评估、电磁辐射观测方法，采用煤体注水、深孔爆破、采空区断顶等解危手段，实现了煤矿的安全生产。

The seam water injection is an effective measure to control coal dust concentration.

煤层注水是降低矿井粉尘浓度的有效措施之一。

The coke tower s are working under high temperature and coke in and out with hot and cold distress,and local severe distortion of the towers or dehiscence of welded seam appears frequently.

焦炭塔长期在高温及充焦、除焦的冷热疲劳作用下运行，常出现塔体局部严重变形和母材焊缝开裂问题。

Good understanding of metal composition. Good ability to analyze the seam quality on welding parts.

熟悉各种常见金属材料的成分构成，能对焊接试样进行处理并分析焊缝质量

A cutting unit of shearer introduced in this design applies to the thick and thin seam mining and hearer cutting angle is less than 15°.

摘要设计中所介绍的采煤机截割部适用于倾角的中厚偏薄煤层的开采。

In order know the size and the distribution of residual stresses of mill welding seam,this paper uses blind-hole method to test the girth welds between round plate and the cylinder body of the mill produced by CBMI CONSTRUCTION CO.,LTD.

为了了解滑履磨机焊缝残余应力的大小和分布规律，该文应用盲孔法对中材建设有限公司生产的某型号磨机的圆平板与圆筒体之间的环焊缝及其近缝区的表面残余应力进行了现场测试。

In order know the size and the distribution of residual stresses of mill welding seam,this paper uses blind-hole method to test the girth weld s between round plate and the cylinder body of the mill produced by CBMI CONSTRUCTION CO.

为了了解滑履磨机焊缝残余应力的大小和分布规律，该文应用盲孔法对中材建设有限公司生产的某型号磨机的圆平板与圆筒体之间的环焊缝及其近缝区的表面残余应力进行了现场测试。

In order know the size and the distribution of residual stresses of mill welding seam,this paper uses blind-hole method to test the girth welds between round plate and the cylinder body of the mill produced by CBMI CONSTRUCTION CO.

为了了解滑履磨机焊缝残余应力的大小和分布规律，该文应用盲孔法对中材建设有限公司生产的某型号磨机的圆平板与圆筒体之间的环焊缝及其近缝区的表面残余应力进行了现场测试。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。