rqr
- 网络岩石质量风险;安静的范围
rqr
-
Determination of half value layer for the X-ray diagnostic quality of RQR
标准X射线辐射场RQR半值层的测定
-
For most rock masses in the nature the mean value of RQD , rock quality percentage ( RQP ) and rock quality risk ( RQR ) can be read off from the rock quality description charts plotted in this paper .
对于自然界大部分岩体,可根据结构面间距统计参数,直接在本文得出的一系列岩石质量图上定出RQD平均值、岩石质量百分比(RQP)及岩石质量风险(RQR)。