对于线性荷载作用下外简支环板，引入统一强度理论，进行了极限荷载分析。
For simply supported annular plate under linear load, the limit load analysis was investigated by applying unified strength theory.
就平面向量场的分叉理论而言，极限环分叉的研究已成为人们关注的热点，具有极其重要的理论价值和实际应用价值。
The bifurcations of limit cycles which have important theory values and apply values are generally acknowledged as the hot areas of the research work.
运用庞卡莱—班狄克逊环域理论，得到了极限环存在的充分条件；
The sufficient condition for the existence of limit cycle is proved using the Pioncare-Bendixson theory.
本文简要介绍了总体评价法在研究非线性控制系统极限环振荡方面的理论和应用。
In this paper, the theory and application of the Method of General Estimation on the study of the continuous oscillation of nonlinear control system has been introduced in brief.
从理论及实验两方面，研究了带外挂后掠机翼的极限环颤振分叉现象，得到了稳定、半稳定及不稳定极限环。
Both theoretical and experimental analyses are performed to investigate the limit cycle flutter bifurcation of a sweepback wing with an external store in the tip of the wing.
从理论及实验两方面，研究了带外挂后掠机翼的极限环颤振分叉现象，得到了稳定、半稳定及不稳定极限环。
Both theoretical and experimental analyses are performed to investigate the limit cycle flutter bifurcation of a sweepback wing with an external store in the tip of the wing.
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