rock hardness meaning in English

岩石的硬度
岩石硬度
岩硬

Standard test method for determination of rock hardness by rebound hammer method
用回弹锤法测定岩石硬度的标准试验方法
In addition , the article shows the possible site which maybe generate induced earthquake according to fault activity and the site where faults pass in reservoir region , reservoir depth and rock hardness etc
另外，从库区断层活动性及断裂所通过的位置、库水深度及岩石坚硬程度等方面，分析出可能产生诱发该水库地震的位置。