发射电流密度 meaning in English
emission current density
Examples
- Experimental investigation of a high emission and intense current electron - beam diode
高发射电流密度二极管实验研究 - Using field emission cathode , x ray source can be made with several advantages : smaller volume and brighter , high frequency response , in - time turning on , etc . considering of the merits and potential markets , researching and fabricating miniature x - ray source is meaningful
由于突起数目大且尖端顶端电场强度高，因此产生很大的场发射电流密度。采用场发射阴极的x射线光源具有体积小，辐射强度高，频率响应快，可以随时开启，无需预热的优点。 - The field emission properties of cnts samples have been investigated . the well - aligned cnts film has a turn - on field of 0 . 78v / m with a current density of 10 a / cm ~ 2 and at the field of 1 . 08v / m a 1ma / cm ~ 2 current density was obtained , which can satisfy the need of fed
定向碳纳米管薄膜最后的开启场强为0 . 78v / m (发射电流密度10 a / cm ~ 2 ) ,发射电流密度达到1ma / cm2所需要的电场强度为1 . 08v / m ,达到该电流密度则可满足场发射平板显示器的需求。 - Recently , a number of experiments and theoretical researches have showed that diamond thin films ， especially nanocrystalline diamond thin films , could emit electrons at very low fields , and be well suited for field emission cold cathode which is applied in many field emission applications , such as microwave vacuum devices and field emission displays
近年来，国内外不断有实验和理论研究表明，金刚石薄膜特别是纳米晶金刚石薄膜，在低的开启电压作用下，即可获得很高的场致发射电流密度，具有十分优秀的场致电子发射特性，是一种理想的场致发射阴极材料。 - Due to their high aspect ratios and small tip radii of curvature , carbon nanotubes possess marvelous electron field emission properties , viz . low turn - on voltage ( e0 ) and large emission current density ( je ) , and have good potential for using as materials in electron emitters of flat panel display
由于奈米碳管具有极高的纵横比与极小的尖端曲率半径，因此奈米碳管有著超乎常态的电子场发射特性，低的场发射起始电压与大的场发射电流密度，使其为电子场发射平面显示器的良好材料。