Nonharmonic has become the main symbol of green. Much attention is pay to harmonic analysis.

无谐波已成为“绿色”的主要标志，谐波分析越来越被重视。

youdao

Nonharmonic has become the main symbol of green. Much attention is pay to harmonic analysis.

无谐波已成为“绿色”的主要标志，谐波分析越来越被重视。

youdao