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

结果证明裁军题是达成协议主要障碍。

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.

边界元法广泛应用于岩石题最障碍是岩体非均质及其包含量节理，本文采用多子域思想结合节理非线性模型较好地解决了这一难题。