shot core drill

例句：

1. 1. The engineerused a shot core drill to bore throughthe rock.
   工程师使用射孔钻头钻穿了岩石。
2. 2. The core drill was essentialfor testing the integrity of the foundation.
   核心钻探对于测试地基的完整性至关重要。
3. 3.During the drilling process, the techniciancarefully monitored the shot core drill'sperformance.
   在钻孔过程中，技术员仔细监控射孔钻头的性能。