与长周期的数据库管理的匹配阻抗。

Match impedance to long-cycle database administration.

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在微波电路和天线系统中，阻抗匹配是十分重要的问题。

In microwave circuit and aerial system, impedance matching is very important.

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相对较低的灵敏度得到改善前置这可能是由于阻抗不匹配的输入阶段。

The relatively low sensitivity improvement obtained with this preamp could be due to impedance mismatching on the input stage.

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