The vortex flow is resulted from inertial centrifugal force and the jet flow is from strong convection by the horizontal convergence.
充分说明龙卷风由涡旋流和急流这两种流叠加而成，涡旋流是由惯性离心力造成的，急流是由水平辐合辐散而引起的强对流。
In addition, comparison of arch crown settlement and horizontal convergence of haunch between in-situ testing data and computing ones shows that the variation laws fit preferably.
另外，现场实际量测拱顶下沉数据和拱腰水平收敛值与计算数据的相互比较表明，两者变化规律吻合较好。
The horizontal velocity field along the direction of front movement displays the characteristics of typical convergence pattern.
水平速度场在沿锋面移动方向表现出明显的辐合(散)特征。
The horizontal velocity field along the direction of front movement displays the characteristics of typical convergence pattern.
水平速度场在沿锋面移动方向表现出明显的辐合(散)特征。
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