“AB power pack”的概念、定义、翻译、参考文献-科学参考

单词	AB power pack
释义	AB power pack [ā¦bē `pau̇·ǝr ´pak] ^ELECTRICITY 1. Assembly in a single unit of the A battery and B battery for a battery-operated vacuum-tube circuit. 2. Unit that supplies the necessary A and B direct-current voltages from an alternating-current source of power.
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