the motion of precession vortex core pvc in a cyclone separator is described and the influence of pvc on the flow field in the cyclone separators is analyzed a method to calculate the velocities in flow field concerning with the influence of the pvc is deduced by meanings of vortex induced velocity the result shows good agreement comparing with the calculating and the experimental dat

描述了旋进涡旋芯PVC在旋风分离器内的运动，分析了PVC对旋风分离器内流场的影响，推导了考虑PVC影响的流场速度的计算方法，并将计算结果与实验数据进行了比较，结果吻合较好

以上为机器翻译结果，长、整句建议使用 人工翻译 。