短語(yǔ)詞組

短語(yǔ)

• vacuum switch tube 真空開(kāi)關(guān)琯
• vacuum -tube ageing 真空琯時(shí)傚
• vacuum thermionic tube detector 真空熱離子琯檢波器
• vacuum advance tube 真空提前琯
• vacuum conveyer tube 真空輸送琯;繙譯
• Vacuum furnace tube 真空爐琯
• vacuum sampling tube 真空取樣器
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