Intrduces a equipment of low seam mining support-ZY3300/07/13D the low seam hydraulic support.
介绍了一种薄煤层采煤支护设备—ZY3300/07/13D薄煤层液压支架。
The results showed that the higher of the mining influence coefficient, the longer the time interval between the up seam mining and the low seam mining would be favorable to the up seam mining.
结果表明，采动影响系数越大、上下煤层开采间隔的时间越长，对上部煤层的开采就越有利。
Dry plasma cutting: also called the air-filled type cutting, the air compressor to plank cut in order to achieve the effect of cooling seam jet, such cutting costs low, but pollution is very large.
干式等离子切割：又称风冷式切割，采用空压机对板材割缝喷气以达到冷却效果，此类切割成本较低，但是污染很大。
Fixed: Wood Log has low quality textures and hard seam line.
固定：木材原木具有低质量的纹理和硬线。
There are series problems exist in the existing thick seam mining technology with large dip Angle, thus cause low extraction rate, poor safety and high cost.
现有的大倾角厚煤层开采技术存在着一系列问题，从而导致煤矿回采率低，安全性差，成本高。
Essential way of solving the gas drainage problem of low permeability coal seam is to increase coal seam permeability.
解决低透气性煤层瓦斯抽放问题的根本途径是增加煤层的透气性。
Using low cost charge coupled device (CCD), a vision sensing equipment in welding process was made, and a real time plasma arc welding (PAW) seam tracking system was implemented.
采用低成本电荷耦合器件制作了焊接过程视觉传感器，实现了一种等离子弧焊焊缝实时跟踪系统。
This paper discusses coal cutting drum, coal loading, maximum coal cutting height, low coal seam conveyor and how the low coal seams restrict the use of coal shearers.
分析介绍了滚筒装煤、最大采煤高度、薄煤层输送机、薄煤层对采煤机的要求等问题。
The low-coal seam synthesis mechanized mining of Shenhuo Xinzhuang mine is mostly to solve the height and power problem of mining equipment.
神火新庄矿薄煤层综合机械化采煤，主要是解决采煤设备的高度和功率问题。
Whole three-phase core is made of three curved silicon steel belt material through rolling, without clearance and seam. The tank has features of low loss, low exciting current, low noise and others.
整个三相铁芯由三条曲线硅钢带料卷制而成，中间无气隙及接缝，油箱采用低损耗、低激磁电流、低噪声等特点。
Aimed at top corner gas management at the low gas blasting face, by upper goaf drainage with decompression in self coal seam, the experience is tried, the effect is obvious.
针对低瓦斯炮采工作面上隅角瓦斯治理，利用本层上采空区泄压释放，进行尝试实验，效果明显。
From rock strength, the main seam roof is divided into extra-high intensity, high intensity, middle intensity, and low intensity.
从岩石强度方面把煤层顶板分成强度特高型、强度高型、强度中等和强度低型。
A new process of high speed seam welding with secondary rectification for double seam possesses good weld quality, high welding speed, smooth bead and low consumption features.
双缝高速次级整流缝焊是一项新工艺，具有焊接质量好、焊接速度快、焊缝表面光洁及能耗低等优点。
The stripped facade is comprised of low-cost standing seam metal panels in a variety of colors.
条状的立面是由各种颜色的低成本设缝金属板组成。
Gas drainage in high gassy coal seam with low gas permeability is always an hard solved significant technology problem in the process of safety production.
高瓦斯低透性煤层的瓦斯抽放，一直是煤矿安全生产过程中的重大技术难题。
The results show that the partial unmelted region, casting defect structure and secondary crack form in the welding seam, which result in the low stress breakage of the samples.
结果表明：在焊缝区域内存在着局部未熔区以及铸造疏松组织和二次裂纹等缺陷，这是导致试样低应力断裂的根本原因。
"Pressure relief antireflective" technology is to improve the soft low-permeability coal seam gas extraction rate in an effective way.
“卸压增透”技术是提高松软低透气性煤层瓦斯抽采率的有效途径。
There have been some problems such as low coal recovery and difficult management after coal mining in steep seam mining method.
急倾斜煤层的回采一直存在着回采率低、采后难以管理等实际问题。
The hole enlargement by high - pressure water jet provided a feasible technical way for raising gas drainage effect from coal seam in low permeability and improving the effect of outburst pre...
高压水射流扩孔为提高低透气性煤层的瓦斯抽放效果和扩大防突措施的效果提供了一个可行的技术途径。
As the soft coal seam is high gas content and low permeability. it has been difficult and key for the coal seam gas extraction.
由于松软煤层的瓦斯含气量高而透气性又极差，一直是本煤层瓦斯抽采的难点和重点。
AUT has the characters of high efficiency and low costs of testing, which can meet the requirement of time limitation and quality control of welding seam in constructing submarine pipeline.
自动超声波检测技术具有检测效率高和成本低的特点，满足了海底管线铺设时效性要求和焊缝质量控制要求。
In the low gas face, under the premise of drainage gas with drilling holes, it has established utility to use upper goaf drainage with decompression in self coal seam.
在瓦斯涌出较小的采煤工作面，在不必钻孔抽放瓦斯的前提下，有一定的应用性。
This automatic welding system is suitable for the automatic welding of the T-shape seam and good results have been achieved. It is a low-cost-automatic welding system for T-shaped seam.
该自动焊接系统在钢制散热器管道焊接生产应用中取得了良好的效果，是一种低成本自动化的T形管焊缝专用焊接设备。
This automatic welding system is suitable for the automatic welding of the T-shape seam and good results have been achieved. It is a low-cost-automatic welding system for T-shaped seam.
该自动焊接系统在钢制散热器管道焊接生产应用中取得了良好的效果，是一种低成本自动化的T形管焊缝专用焊接设备。
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