The basic flow patterns and hydraulic characteristics, flow velocity and pressure distribution characteristics, have been investigated on a model of the level rotary flow discharge tunnel.
通过模型试验，研究了水平旋流泄洪洞的基本流态、基本水力特性、流速分布与压强分布特性。
The distribution is the phase reverse between the high-latitude and the low-latitude district, which is the most distinctly structure characteristic of the sea level pressure in the north hemisphere.
北半球海平面气压典型空间分布结构中最显著的特点是高纬地区与中纬地区呈现典型相反的位相变化。
The distribution law of inner stress field and its effect on controlling underground impact pressure are discussed, when sub-level caving method is introduced.
讨论了放顶煤开采的采场应力场的分布规律及其对冲击地压的控制作用。
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