a cathode that is a source of electrons without being heated
双语例句
用作名词 (n.)
Cold cathode sensing tubes are more rugged than the glass, hot-filament tubes. 冷阴极传感管比玻璃热丝管坚实。
As the key parts in vacuum microelectronic devices, field emission cold cathode materials play a crucial role in the research and application of vacuum microelectronics. 摘要场发射冷阴极材料作为真空微电子器件的核心部件，在真空微电子场发射的研究与应用中占有极其重要的地位。
