硬质岩石 meaning in English
hard rock
ragstone
tough rock
Examples
- Abstract : main construction points of qingfang hospital station on qingdao subway under the condition of hard surrounding rock are described . blasting control and vibration monitoring are stressedly introduced
文摘:阐述了青岛地下铁道青纺医院车站在坚硬岩层中的施工要点，重点介绍了爆破控制、震动监测等内容，对于城市硬质岩石条件下的地下工程具有借鉴意义。