在拱曲型和块断型的地洼盆地中，往往形成开阔的短轴褶皱构造。
In the arched fracture-type and block-type basins there were often formed open brachyanticlines.
研究具有变动边界的三维区域上的非线性双曲型方程的初边值问题。
The initial boundary value problem for nonlinear hyperbolic equation in three dimensional domain with moving boundary is studied.
对于所给的双曲型方程组，经特征变换变成了便于作数值计算的形式。
The form of the equations has been changed with feature transformation so as to calculate conveniently.
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