国内外施工高垂直度钻孔的唯一方法就是以有效防斜为基础，加密测斜，并及时纠斜。
The only way to drill a high verticality borehole both in home and abroad is based on effective hole straightening, enhancing inclination surveying and on time straightening.
采用钻孔_电测法对LY 12铝合金垂直于焊缝方向的焊接残余应力及其分布规律、产生的原因进行了分析，探讨了残余应力的消除措施。
In this paper, welding residual stress vertical to welding seam in LY12 armour aluminum alloy was measured by hole-drilling and electrical-measurement method.
应用推荐