The diagram of distribution of speed arrow, constant lines of flow-stream function, vortex, two speed parts and pressure were studied.
绘制了速度矢量分布图，和流函数，涡量，两个分速度及压强的等值线分布图。
Moving path lines, tangential and axial average velocities of particles at the vortex surface are obtained by the photography method.
通过摄像法得出了旋涡表面流体质点的运动轨迹、切向和轴向时均速度。
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