band-selelctive filter
... 选频微伏表：selective microvoltmeter 选频滤光片：band-selelctive filter 选频铃：harmonic ringer ...
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采用窄带滤光片作为选频元件对精确波长激光器高频调制特性进行了小信号分析。
The small signal analysis for high frequency modulation characteristics of specific wavelength laser diode with narrowband filter was presented.
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