Flat tuning 粗调 ; 粗调平直调谐
N the condition of a radio receiver that does not discriminate sharply between signals on different frequencies 粗调
Your piano is flat; it needs tuning.
你的钢琴的音低了，该调一调了。
The utility model has the characteristics of not only flat passband and stopband with large width and high isolation, but also low voltage and high velocity wavelength tuning.
本实用新型具有大平坦宽度的通带和阻带及高隔离度的同时，还具有低电压和高速的波长调谐等特性。
Compared with the other fiber laser structure, our all-fiber structure has higher efficiency and better stability. The laser also has very stable and flat output during the whole tuning range.
与其他结构光纤激光器相比，这种全光纤结构具有更高的效率和更好的稳定性，且在整个调谐宽度范围内，激光输出功率具有很好的平坦度。
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