acoustic effect短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 音响效果 Material nonlinear acoustics MNA and corresponding parameter are introduced, and mechanism of its nonlinear acoustic effect HHG high-order harmonics generating is illustrated in detail. 分析提出了接触非线性声学概念及接触非线性声学参数计算方法，并明确了其与材料非线性声学之间的差别。 jiaotong.whut.edu.cn