The authors describe design of deep raise boring equipment and the experimental study on boring technology, and make an approach to some problems occurring in the deep raise boring test.

叙述了深天井钻进设备的设计和钻进工艺的试验研究，并对深天井钻进试验中遇到的一些问题进行了探讨。

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And has a CNC vertical lathe, boring machine large landing, automatic gap submerged arc welding, electro-optical tracking cutting machine and a variety of measurement test equipment.

且拥有数控立式车床、大型落地镗床、自动间隙埋弧焊、光电跟踪切割机以及各类计量检测设备。

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A new magnetostriction material boring bar is presented for precision finishing of different types of odd-shaped pinholes, and structural optimization and test validation are carried out.

为实现各类异形销孔的精密加工，提出了一种基于磁致伸缩材料的新型镗杆结构，并对其进行了结构优化和试验验证。

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To test the idea, Dr Henkel and his team have begun boring into the Malaren crater in order to map its cracks.

ECONOMIST: Geothermal energy