一、前言随着科学技术的发展,对无线电技术提出了愈来愈高的要求。尤其近些年来,随着宇宙航行的开辟和新式武器的出现,对电子器件的要求就更加苛刻和迫切了。金属与陶瓷封接结构的出现,为电真空工业的发展开辟了新的领域,为超高频大功率,高的工作温度和耐震管的制造提供了有利的条件。它所具有的优良性能,是金属与玻璃封接结构无法比拟的。 I. Preface With the development of science and technology, higher and higher requirements are put forward on radio technology. In recent years, with the opening up of the spacecraft and the advent of new weapons, the requirements for electronic devices have become even more demanding and urgent. The appearance of metal and ceramic sealing structure has opened up new fields for the development of electric vacuum industry and provided favorable conditions for UHF high power, high working temperature and manufacture of shock tube. It has excellent performance, is the metal and glass sealing structure can not be compared.