真空电容率 真空电容率的英文 英语翻译 permittivity of free space; permittivity of vacuum 拓展翻译 真空电容器vacuum capacitor 真空电弧炉vacuum arc furnace 真空电离压力计vacuum ionization manometer 真空电炉vacuum electric furnacevacuum electric furnace 在玻璃泡抽真空后真空管隐藏的最后部份tipoff 在真空内in vacuo 真空vacuum; voidvacuumvacuum 真空安全阀vacuum relief valve 真空按键vacuum keying 真空包装vacuumize 真空包装的vacuum-packed 真空泵pick-up pump; vacuum pumpvacuum pump 真空泵油vacuum pump oil 真空避雷器vacuum arrester 真空表vacuum gauge 真空槽vacuum tank 真空测热计vacuum calorimeter 真空沉淀vacuum deposition 真空沉积vacuum deposition 真空成型vacuum forming