单词：cold cathode
cold cathode的用法和样例：
例句
- 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。
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