首先，通过采用复合式结构展宽抑制元件频带。

First, effective frequency band of component is widened by compound structure method.

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因此，欲展宽频带而保持灵敏度不变就很困难。

Therefore; to expand the frequency bandwidth and to remain the same sensitivity is difficulty.

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因此，欲展宽频带而保持灵敏度不变就很困难。

Therefore; to expand the frequency bandwidth and to remain the same sensitivity is difficulty.

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