倍频器 frequency multiplier; doubler; frequency doubler; frequency booster 倍频速调管 frequency-multiplier klystron ..
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synchronous frequency booster 同步频率放大器
The high voltage variable frequency transformation of power plant's pump system of condensation water pump, condensation water booster pump is described briefly.
对发电厂的凝泵、凝升泵的高压变频改造进行了简要叙述，并对经济性试验的数据进行了定量分析。
Booster compressor noise has the characteristics of wide frequency band, intense low frequency sound and considerably high total sound pressure level.
增压机噪声具有频带宽、低频声强烈，且总声级又相当高的特性。
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