low-frequency regulation的意思|示意

This article has mainly discussed the characteristics of the regulation system of frequency transformer in low-frequency areas and some problems and proposed some improvements.

文章着重分析了变频器调速系统在低频区域的特性，阐述了该系统在低频区存在的一些问题，并提出相应的改善方法。

The low frequency harmonics are regulation and the intensity is strong in the formant of the aged. Thedifference reduces in voice between male and female.

老年期共振峰低频谐波规则，声能强，男女声之间差异减少。