英语词汇“vacuum valve”的释义、用法及例句-英汉词典

词汇	vacuum valve
释义	vacuum valve <<名词>> = vacuum tube 真空管
随便看	speeder speedily speed indicator speeding speed limit speedo speedometer speed-reading speed recorder speed skating speedster speed trap speedup speedway speedwell speedy speleologist speleology spell spell spell spellbind spellbinder spellbound speller

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