intermediate frequency power system 中频电力系统 intermediate frequency preamplifier 前置中频放大器 intermediate frequency transformer 中频变压器 ..
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... pre-ignition=preignition 提前点火 pre-intermediate frequency amplifier 前置中频放大器 pre-outfitting 预舣装 ...
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... IF post amplifier 中频后置放大器 pre-IF amplifier 前置中频放大器 log IF amplifier 对数中频放大器 ...
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中频前置放大器 intermediate frequency preamplifier ; IF preamplifier
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通过实验得出了改善前置中频放大器性能的方法。
The method improving the property of the front medium frequency amplifier was proposed based on experiments.
通信机中的收信前置中频放大器，其性能的高低将直接影响整机技术指标。
The property of the front medium frequency amplifier influences directly the technical targets of the machine. Yet the property of amplifiers are often unstable.
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