tapering drill的用法和樣例：
例句
- According to experience of stonework excavation, we plan to adopt a in-the-hole drill to have deep hole controlled blasting technology.
根據石方開挖施工經驗，計劃采用潛孔鉆機布孔進行深孔控制爆破技術施工。 - This paper describes the significance of thestudy on high pressure pneumatic DTH drill,and main features of the products developedby CIMR.
本文闡述了開展高氣壓潛孔鉆機研究的重要意義及我院研制的幾種產品的主要特征。
