thermionic cathode meaning in English
热电子阳极
热电子阴极
热离子阴极
Examples
- Dc emitting characteristics of single crystal lab6 thermionic cathode
6热阴极直流发射特性实验研究 - Scandate cathode has outstanding properties of high emission at low work temperature . it ’ s the only thermionic cathode which can suffice to the development of new electronic device ’ s requirement
含钪扩散阴极具有极其优异的低温高电流密度的电子发射的能力,是目前唯一能满足新型电子器件发展要求的热阴极材料。 - With the development of high power microwave tube , the theoretical and experiment investigation of the high performance cathode have been conducted . the research work includes how to prepare the high performance cathode and the effect of the based metal on the cathode emission , the measurement of the inner and surface fine structures of the cathode , the discussion of emission mechanism of thermionic cathode . after a lot of experiment , we finally determined the cathode preparation with an excellent emission
为了适应大功率微波管的发展，本文展开了对高性能(大电流密度、长寿命)阴极的研究，研究工作包括阴极制备工艺、钡钨阴极基金属对阴极发射性能影响、以及钡钨阴极基底内部结构无损检测及表面形貌检测、钡钨阴极发射机理探讨及应用四个方面的实验和理论的研究。 - However , the most commonly used x - ray sources didn " t change much no matter in structure or theory , still using thermionic cathodes as electron sources . such conventional x - ray tubes have some defaults , such as big volume , low frequency response , demanding for supply to cathode that was also brittle
目前使用的x光源的基本特点是采用热电子发射形式即采用热灯丝作为电子发射源，在高压加速下轰击阳极产生x射线，这样的光源体积较大，需要加热阴极的电源，且对频率响应慢。 - As a nondestructive technique to measure the inner fine structure of the cathode , the ict has the unique advantage . we discussed the emission mechanism of thermionic cathode , and tried to explain the excellent performance of mixed metal cathode by richardson formula and muller ' s computational model
4 )就当前钡钨阴极发射机理的两个主要理论模型作了自己的探讨，并初探了钡钨阴极中钡的供应机制及发射寿命预测的问题，而且用理查逊公式的推导和muller计算机模拟法解释了混合基钡钨阴极的优良性能。