Controllability and observability of switching systems are studied by using the characteristics of recursive invariant subspace in this paper.

用循环不变子空间的性质研究了切换系统的能控性和能观测性。

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The correction to radar transmitting signal has been realized with digital frequency stabilization technique by using the characteristics of IMSA100.

系统利用IMSA100的特点，用数字稳频技术实现了对雷达发射信号的校正。

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Its an important method to judge the matter of exact division by using the characteristics of exact division of Number in the field of Number Theory.

用数的整除特征去判断数的整除问题是数论中的重要方法。

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Biometric identification, which works by using the unique characteristics of your body to prove who you are, may be the key to a much more effective system.

FORBES: Why Your Next Phone Will Include Fingerprint, Facial, and Voice Recognition