The filters are both continuously adjustable , with a range from 20 Hz to 20 kHz in two bands.
该过滤器都是连续可调，并从20赫兹到20千赫两个频带范围。
Full-range frequency response (20 Hz - 20 KHz) for an extremely accurate reproduction of voice and instruments.
全范围的频率响应(20赫兹- 20千赫兹)极其准确地再现语音和仪器。
Third: Inverter-based welders let operators adjust the welding output frequency, from 20 to 250 Hz in the case of the Dynasty.
第三：逆变型焊接焊工让操作调节输出频率，从20到250赫兹的情况王朝。
Third: Inverter-based welders let operators adjust the welding output frequency, from 20 to 250 Hz in the case of the Dynasty.
第三：逆变型焊接焊工让操作调节输出频率，从20到250赫兹的情况王朝。
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