... 高频干燥、high frequency drying 高频预热、high frequency preheating 幅频特性、magnitude-frequency characteristics ...
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high frequency microwave preheating 高频微波预热
The efficient electronic ballast is composed of rectifier-filter circuit, high-frequency inverse transforming circuit, power regulation circuit and filament preheating circuit.
本发明提出了一种高效电子镇流器，由整流滤波电路、高频逆变电路、功率调节电路及灯丝预热电路组成。
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