The distortion mainly comes from two mechanisms: the nonlinearity of the lattice potential and the interaction between the ultrasonic waves and dislocations.
波形畸变主要来自两个方面：固体中晶格原子之间作用力的非线性以及固体中位错和超声的非线性相互作用。
The distortion mainly comes from two mechanisms: the nonlinearity of the lattice potential and the interaction between the ultrasonic waves and dislocations.
波形畸变主要来自两个方面：固体中晶格原子之间作用力的非线性以及固体中位错和超声的非线性相互作用。
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