This paper introduced the experience of the inverted plumb line boring with high vertical requirement at high angle of tilt and adamant rock, and the bore hole surveying straightening and installing of the plumb line.是什么意思_This paper introduced the experience of the inverted plumb line boring with high vertical requirement at high angle of tilt and adamant rock, and the bore hole surveying straightening and installing of the plumb line.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句