分段: section; segmentation; burst ...下: below; down; under; undernea ...钻: drill; auger分段下面拉底: undermining sublevel分段下部掏槽崩落开采: sublevel undercut caving method分段下部掏槽崩落开采法: sublevel undercut-caving method; sublevelundercut-cavingmethod下钻: going down; going in; rih: run in hole; run back into the hole; tripping九段下: kudanshita分段: 1.(分阶段; 分部分) section; segmentation; burst; partition; block; fragment; grading fragment 分段制造 build in sections; 分段解决(边界) sector-by-sector solution2.(分段落) paragraph 分段讲述课文 dwell on the text in paragraphs [paragraph by paragraph]; 这篇课文共分3段。 the text falls into three paragraphsst段下斜: downward sagging st segment; sagging of st segment底段下静脉: inferior basal vein九段下站: kudanshita station地下钻: underground drilling起下钻: make a trip; round trip擒下钻: escape wheel foot jewel下钻具: run in末段下降控制: terminal descent guidance上段下支气管: bronchus segmentalis subsuperior地下钻机: drifter drill for underground地下钻井室: drill room地下钻探: subsurface boring短起下钻: short trip刮拭起下钻: wiper trip过轮下钻: bottom fourth jewel划眼起下钻: wiper trip