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.
根据本发明，该压簧在朝该活塞的方向上作用在一个凸形地拱曲或凹形地拱曲并且保证该活塞的摆动运动的表面上。
According to the invention the pressure spring ACTS in the direction fo the piston against a convex curved or concave curved surface which permits a pivoting movement of the piston.
汉语声调的曲拱特征有三。
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