The results show that the double period bifurcation, quasi period motion and chaotic motion can be found under some condition.

结果表明：在某些条件下，转轴系统有可能产生倍周期分岔、拟周期分岔并出现混沌振动。

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Stiffness change has little effect on the critical instability and motion of the cracked-rotor, and the system motion is quasi-period motion.

裂纹转子轴刚度变化对油膜失稳点及油膜失稳之后转子的运动影响不大，转子系统作拟周期运动。

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Furthermore, prior to earthquakes, lake -water can amplify the abnormal features of crustal deformation, long-period motion and earth gas, it is one of the methods in sho...

另外在短临预报巾湖泊也是震前地壳形变、长周期波动和地下冒气的前兆放大点。

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During the same period, Research in Motion shares lost more than 90 percent of their value.

FORBES: Research in Motion vs. Shareholders: The Final Showdown

After a rather dismal period in the 1970s and '80s, Sony moved their motion picture operations to Culver City's former MGM studios in the early '90s, leading to a recently revitalized downtown area with upscale bars and quirky but user-friendly restaurants.

BBC: Culver City, ready for its close-up

Research In Motion had just 1.4% of the market in the period.

FORBES: Apple Tops 50% Of The U.S. Smartphone Market