如何实现极窄的通带宽度和极小的中心频率偏差是研制中所解决的关键技术问题。
The key technique of this new filter is how to achieve the extreme narrow band-pass width and a slight deviation of central frequency.
我们用频带宽度这个词来代表这样的频率范围。
We use the term bandwidth to represent such a frequency range.
该仪器频带宽度宽，频率和占空比可调，拓宽了仪器的应用领域。
It is characterized by broadband, adjustable frequency, and adjustable duty ratio, so the instrument has wide application field.
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