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提出晶体四维状态效应新模型．重点分析了机电耦合效应与电磁效应的相似性．从而提出机电耦合二次、三次…感生效应的概念，以压电效应为例，从定性与定量两方面分析其变化规律，并通过静态下的实验给予证明．机电耦合大于等于二次感生效应的存在与应用，对研究与开发新型可逆变换型传感器、实现传感器与执行器集成化与－体化均具有理论指导意义．
Proposed a new model of four-dimensional crystal state effect. The similarity between electromechanical coupling effect and electromagnetic effect is analyzed emphatically. In this paper, the concept of electromechanical coupling secondary and tertiary inductive effect is put forward. Taking the piezoelectric effect as an example, the variation regularity is analyzed qualitatively and quantitatively, and the experiment is proved by the static experiment. The electromechanical coupling is greater than or equal to the existence and application of the secondary induced effect, which is of theoretical significance for the research and development of a new reversible transducer and for the integration and automation of sensors and actuators.