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.
本课题重点研究了适合制作真空开关管绝缘外壳的微晶玻璃；微晶玻璃的成型与金属封接同时完成的工艺；以及封接金属的处理工艺。 返回 vacuum switch tube