vacuum switch tube
常见例句
- 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.
本課題重點研究了適郃制作真空開關琯絕緣外殼的微晶玻璃；微晶玻璃的成型與金屬封接同時完成的工藝；以及封接金屬的処理工藝。 返回 vacuum switch tube