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- vertical shaft uncovering coal 立井揭煤
- An inclined or vertical shaft or passage between levels in a mine. 小暗井矿井里层与层之间倾斜的或垂直的竖坑或通道
- J. Vertical Shaft Fine Adjustment Screw. 垂直杆微调螺丝.
- The part of a vertical shaft that turns in a bearing. 轴踵轴承中能旋转的垂直的轴
- The property and feature of PSFL series vertical shaft impact crusher and application in coal water slurry production are introduced in this paper. 介绍了PSFL系列立轴双反击破碎机的性能、特点及在水煤浆生产中的应用效果。
- Fracture accidents of vertical shaft lining in aquifer are introduced. 研究了表土段立井井壁的破裂情况；
- This is the base to explain the relation between the gas outburst and the broken coal seam when uncovering coal in crosscut rationally. 从而很好地解释了石门揭煤条件下煤体破碎程度与突出的关系。
- It is found that creeping occurs to coal in certain situation because the stress on uncovering coal plane has changed from three-dimensional stress to dichroic. 由于揭开的煤层裸露面由原来的三向受力变为二向受力,在合适的条件下煤体会产生蠕变。
- A platform or an enclosure raised and lowered in a vertical shaft to transport people or freight. 升降机在垂直通道上载运人们或货物升降的平台或笼子
- A nearly vertical shaft or cavity worn in a glacier by surface or rock debris falling through a crack in the ice. 冰川锅穴冰川中近于直立的井穴或洞，系由冰面和岩石碎屑从冰缝中坍落而成
- The Cave of Swallows in Mexico is a 400m vertical shaft, deep enough to engulf the Empire State Building. 原来，墨西哥的燕子洞有四百米深，足以放下整个帝国大厦！
- When advancing and uncovering coal in roadway, better construction method is vibration shot, metal framework, borehole bleed-off and hydraulic hole, of which vibration shot is principal. 井巷掘进揭煤时,较好的施工方法是震动放炮,金属骨架,钻孔排放和水力冲孔,尤以震动放炮为主。
- Elegant enclosure made by valuable log, together with gilding vertical shaft and beautiful curlicue shows magnificence. 以贵重原木构造出高雅的机壳，镀金立柱和精美花饰点缀出富丽堂煌的气质。
- The simplest form of governor consists of a pair of balls which are attached to a vertical shaft by means of arms. 形式最简单的调速器是由一对球体构成；两个球体通过臂杆连接到垂直轴上。
- Sand making machine also known as vertical Shaft Impact Crusher ,is applied widely for the powd... 发布者：吕秋平所在地：河南郑州市行业：机械及行业设备职位：外销员工作年限：二年以上
- The development of vertical shaft tunnel in former USSR is introduced in the paper. 本文对原苏联等国家的竖井式泄水道发展过程作了简要介绍,并进行了评述。
- A platform or cage that is raised and lowered mechanically in a vertical shaft in order to move people from one floor to another in a building. 在一个垂直的杆状物中升起或降低的平台或小房间能够把人从一层带到另一层。
- Stock leaking and cross-contamination in quare plansifter without a vertical shaft is a common problem universally existing in every flour mill. 无立轴高方平筛的窜漏粉问题是各个粉厂普遍存在的共性问题。
- As to the profile shapes of ground collapse, they are approximately divided into vertical shaft, butterfly, funnel, ampulliform in shapes and so on. 剖面形态大致可分为竖井状、蝶状、漏斗状及坛状等。
- This text introduced the practice method of the box permanent steel petroleum derrick shaft sinking in the construction of vertical shaft pit shaft. 在立井井筒建设中,我们在原设计的基础上,对箱形永久钢井架凿井的实际方法作了改进。
