基本解釋[經(jīng)濟(jì)學(xué)]真空開(kāi)關(guān)管英漢例句雙語(yǔ)例句This paper describes the present situation, raw materials, pressing process, sealing with metal, and products analysis of the ceramic vacuum switch tube and make a view of its development.本課題重點(diǎn)研究了適合制作真空開(kāi)關(guān)管絕緣外殼的微晶玻璃；微晶玻璃的成型與金屬封接同時(shí)完成的工藝；以及封接金屬的處理工藝。vacuum switch tube更多例句詞組短語(yǔ)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)vacuum switch tube更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)真空開(kāi)關(guān)管