英语语法分析

Rock mass is a discontinuum separated by structural surfaces.

岩体是一种被不连续结构面切割的不连续介质。

The Distinct Element Method(DEM)is a discontinuum-based numerical method especially applicable to solve the discontinuity problems in jointed rock mass.

离散元法是基于不连续性假设的数值方法，它特别适合于求解节理岩体中的非连续性问题。