查询词典 welted seam

The using result of shearer helical drum used in three soft coal seam is analyzed,and in order to improve the coal-loading capability,some theory analyses and reference opinions are provided at the same time.

分析了采煤机螺旋滚筒在三软煤层中的使用效果，为在三软煤层中滚筒如何能提高装煤效果提供了理论分析和参考意

According to coal seam situation and nature geology conditions in Xiaokang Coal Mine,the problems of road optimum design in the very soft rock coal mine are researched.

根据小康矿的煤层赋存状况及自然地质条件，围绕极软岩矿井巷道设计优化的问题进行了研究和实践。

Drilling a hole in the coal seam, soft rock and in the farmland beat the well time and limited efficacy rate .

200米液压钻机主要用于钻探各种深度为200米左右的各种角度的各类用途的孔，可在不同硬度的岩石中钻孔，而在煤层、软岩石中钻孔以及在农田打井时效率最高。

The selection principle of the roof control parmeters is introduced at the blasting caving coal face in three soft coal seam.

介绍了三软不稳定煤层炮采放顶煤工作面顶板控制参数的选择原则。

The bolting support principle is introduced to support roadways in extremely soft seam of coal mine with complex roof.

复合顶板极软煤层巷道是围岩变形剧烈且顶板易冒落极难维护的巷道。

The results show that the fractography is woody structure, there is a great deal ferric oxide in the hair seam, its matrix is composed by the ferrite, the pearlite and a little of sorbite and troostite, the grain size is 9～10 levels primarily, there are obvious zone structure and inclusions, which are silicate, sulfide and a little of oxide.

结果表明：弯裂带钢的断口呈木纹状，发纹处存在大量氧化铁，其基体主要由铁素体和珠光体组成，有少量索氏体及屈氏体，晶粒度以9～10级为主，有较为明显的带状组织，夹杂物为硅酸盐、硫化物及少量氧化物。

The seam level keeps going from left to right and just as you want it you have to press Spacebar and keep holding it.

在煤层水平不断将从左到右，只是因为你想要它，你必须按空格键并保持持有它。

The study is includes: some images having some repeated area is projected on the spherical surface, and the adjacency pixels is matched, the seam line is clear, and get the background image from the panoramic spherical image according to the relation table based on view angle.

该方法研究了利用多幅具有重叠边界的客观图像通过球面投影、相邻图像像素匹配、消除相邻图像拼接处亮度差，进行无缝拼接获得全景图，以及在仿真过程中通过对应关系表得到正确背景图像的方法。

The paper described the reliable weld seam tracking system based on dynamic mask match for spirally tubes.

设计一种基于动态模板匹配的焊缝自动跟踪系统。

The burner adopts the structure of wave or straight profile internal furnace, fuel gas three-backward stroke and full butt-joint seam wet-back pattern, which can

燃烧室采用了波形炉胆或直形炉胆、对接焊缝，湿背式结构，避免了后管板受高温烟气冲刷易烧坏的特点，确保锅炉安全运行。

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。