The three-dimensional phonocardiogram after wavelet analyzing could describe all the information of frequency domain, time domain and amplitude domain perfectly.

经小波变换的三维心音图更为直观详尽地反映出各组心音信号在不同时域、频域与强度范围内细节性的信息。

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And then, based on experiments and combined with three-dimensional full-wave electromagnetic simulation software, the frequency domain and time domain performance of the through-hole via is analyzed.

然后基于实验研究，并结合三维全波电磁仿真软件在频域和时域对通孔结构性能进行分析。

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And then, based on experiments and combined with three-dimensional full-wave electromagnetic simulation software, the frequency domain and time domain performance of the through-hole via is analyzed.

然后基于实验研究，并结合三维全波电磁仿真软件在频域和时域对通孔结构性能进行分析。

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