1·Based on the basic features of dynamic gas emission during boring process, a theoretical model for calculating the dynamic volume of gas emission from bore hole is set up.
基于钻孔过程中瓦斯动态涌出的基本特点，建立了钻孔瓦斯动态涌出量的理论计算模型。
2·Disclosed is a rigid boring cutter for machining a slender hole.
一种加工细长孔的刚性镗刀。
3·This paper introduced construction technique of the inverted vertical line survey system, boring, hole slope measuring, slope correcting, etc. of the Yantan hydropower station.
介绍岩滩水电站大坝倒垂线观测系统的倒垂线孔钻孔的孔斜控制、孔斜测量、孔斜纠偏等施工技术及廊道内遇长岩芯的处理方法。
4·The NC boring machine equipped with this kind of deformable bar can bore special-shaped pin hole in piston efficiently, and meanwhile meet the demand of micro-meter accuracy.
装有这种新型变形镗杆的NC镗床能高效地镗削活塞异形销孔，并达到微米精度的要求。
5·The application situations of controlled blasting techniques in pile hole boring are introduced.
通过实例介绍了控制爆破技术在桩孔开挖工程中的应用情况。
6·This paper expounds the design of processing techniques before hole-boring on the cylinder of upright post and hoisting jack used in the hydraulic support.
阐述了液压支架所用立柱、千斤顶的缸筒在上深孔钻镗床进行镗孔、滚压之前必须进行的加工工艺的设计。
7·The boring machine used to process larger diameter hole, to achieve higher machining accuracy.
镗床用来加工直径较大的孔，能达到较高的加工精度。
8·Product use: machining deep hole gun is applicable to stainless steel, aluminum alloy, steel, cast iron and other materials of drilling, deep hole boring of workpiece.
产品用途：适用于普通碳钢、铸铁等各种材质工件深孔镗的钻孔，镗孔，刮削滚轧加工。
9·In Sanshan West Bridge arch's defect detection, we calculate the defect's dimension through analysis the wave time and wave shape parameters, and then verify the results by boring a hole.
在三山西大桥拱肋缺陷检测中，通过声时波形参数计算拱肋缺陷的大小，并进行了钻孔验证。
10·To adopt boring technology to process hole alike ellipse sphere in the harder material and to explore devising method of cutting tool.
采用镗削加工工艺加工硬度较高材料的椭球孔，并探讨刀具设计方法。