A judging criterion of closely spaced modes by eigenvector turning angles is put for ward in this paper.
用特征向量转角给出了一种密集模态的判别准则。
On the basis of studying the physical and chemical characteristics of pyrauxite ores, the development direction of the pyrauxite deposit was put for ward.
在对不同矿石类型的物质组成物化性能研究基础上，科学合理地指出了该矿床的开发利用方向。
Two kinds of cause of losing lock in PLL speed regulation system are analysed. Corresponding formulas are obtained. The ways of overcoming losing lock are put for ward.
本文分析了锁相环调速系统中两种失锁现象的原因，得出相应的计算公式，提出了克服失锁的办法。
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