The question of disarmament proved a major stumbling block to agreement.

结果证明裁军问题是达成协议的主要障碍。

This paper presents an efficient method of modelling jointed rock by using the boundary ele-ment method via the concept of multiregion and non-linear model of joint and fault.

边界元法广于岩石力学问题的最障碍是岩体的非均质及其包含的量节理断层，本文采多子域思想结合节理断层的非线性好地解决了这一难题。