大电流密度 meaning in English
hcd high current density
Examples
- 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。 - Lifepo4 / c composite sample synthesized using coal tar bitumen and carbon both as the carbon precursor under 300 / 3 h + 650 / 6 h also gives a good discharge curves , the discharge specific capacity reached 104 . 0 mah / g 、 100 . 2 mah / g under the measuring current of 183 ma / g 、 366 ma / g respectively , and it keeps the good cycle performance in nearly 140 cycles . few reports were related to the lifepo4 / c composite synthesized using low cost bitumen as the carbon precursor
采用煤焦油沥青和乙炔黑同时作为碳前驱体时,在300 / 3h + 650 / 6h的焙烧制度下得到的试样,在183 、 366ma / g的大电流密度下仍有104 . 0mah / g 、 100 . 2mah / g左右的放电容量,在140次循环内均表现出了很好的循环性能。