vacuum switch tube

短語(yǔ)詞組

短語(yǔ)

• vacuum m switch tube 真空開(kāi)關(guān)管
• ceramic vacuum switch tube 陶瓷真空開(kāi)關(guān)管
• high -voltage ceramic vacuum switch tube 高壓陶瓷真空開(kāi)關(guān)管
• vacuum -tube switch [電子]真空管開(kāi)關(guān)
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