The improved particle filter tracking algorithm not only keeps the high efficient operation, but also improves stability of target tracking.
改进后的粒子滤波跟踪算法不但保持了较高的运算效率，而且还较好地提高了跟踪的稳定性。
Small particle size; good mechanical stability.
粒径小；机械稳定性好。
The stability of the particle in Acoustic levitation apparatus is discussed according to the results of the numerical simulation.
通过数值模拟的方法讨论了声悬浮装置中几种对颗粒稳定性有影响的因素。
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