In the article, a simple method is discussed to confirm the principal stress direction un-den the plane stress condition.
文章给出了一种判断平面应力状态主应力方向的简便方法。
The frequency domain maximum likelihood method is a very efficient method, the advantages of which are simple in computing, un biased and consistent.
频域极大似然法则是一种有效的方法，它具有频域计算简单，同时估计又是渐进无偏和一致的优点。
Though the traditional PID is simple, the settling time is long and the effect is un- ideal.
通常所采用的传统PID控制算法虽然简单，但系统调节时间较长，控制效果不理想。
Un-contamined waste developer can be used as nourishment liquid by a simple process.
同时，进行了废显影液作为花卉营养液利用的研究。
The HLA E/O countermeasure simulation, based on the traditional and the simple simulation modes, is provided to solve the problem of un-reusability in the traditional simulation modes.
基于传统的简单仿真模式，提出基于HLA的光电对抗仿真，解决了传统光电对抗仿真中不可重用的问题。
The HLA E/O countermeasure simulation, based on the traditional and the simple simulation modes, is provided to solve the problem of un-reusability in the traditional simulation modes.
基于传统的简单仿真模式，提出基于HLA的光电对抗仿真，解决了传统光电对抗仿真中不可重用的问题。
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