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。
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。
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。
In the end of the paper, the key steps to test the release strain in RC columns by boring-electrical test method and the noticeable proceeding in practical projects are summarized.
最后总结钻孔—电测法测量钢筋混凝土柱中混凝土的孔边释放应变的关键步骤和在实际工程中应用时应该注意的事项。
The influence of "non-standard accuracy" must be considerd among the key error factors of coaxiality of turnover boring, except the list errors in the standard of test accuracy;
影响调头镗孔同轴度的主要误差因素中，除机床精度标准中规定检测的有关误差项外，精度标准中未被列入检测的相关“非标误差”也有重要影响。
Test conditions for boring and milling machines with horizontal spindle. testing of the accuracy. part 4: planer type machines with movable column.
带水平主轴的镗床和铣床的试验条件。精确度试验。第4部分：可移动床柱的多刀刨床。
Strain holding test(SHT), part of self-boring pressuremeter test, is one of the most effective in-situ tests in determining horizontal coefficient of consolidation(ch).
旁压应变保持试验（SHT）是测定土体水平固结系数的有效原位测试方法之一。
Usage: The lamps are suitable for local lighting of each middle and small machine tools, planing, boring and milling machines as well as for bench work, test bench and repairing work.
用途：适用于中、小型车床、刨床、铣床、磨床及其它设备的局部照明，还可用于钳工、化验室、维修等工作照明。
Usage: The lamps are suitable for local lighting of each middle and small machine tools, planing, boring and milling machines as well as for bench work, test bench and repairing work.
用途：适用于中、小型车床、刨床、铣床、磨床及其它设备的局部照明，还可用于钳工、化验室、维修等工作照明。
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