An organized self-concept structure emerges at about 11years of age.
系统的自我概念结构大约在11岁开始。
Combined with impedance concept, a method for on line structure health monitoring based on self sensing piezoelectric patches, which are bonded on the surface of the structure, is presented.
利用自驱动、自传感特性的压电陶瓷片，粘贴在外部结构的表面，结合动态阻抗的概念，提出了一种机电耦合的在线压电阻抗技术用于结构健康诊断。
Self Concept is a comprehensively psychological system, and is also an important basis of personality structure.
自我概念是一个复杂的心理系统，也是个人人格结构的重要基础。
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