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- The design of the gun is commonly defined by perveance, beam current, waist radius, waist position and cathode current density. 它的设计主要有导流系数、流、腰半径、腰位置以及阴极电流密度。
- beam current density 电子束流密度
- beam current density uniformity 束流密度均匀性
- A ns pulse beam device is installed at pulse beam current piping. 在脉冲束流管道上安装有强流毫微秒脉冲化聚束装置。
- It can greately improve the transconductance and current density. 其中pHEMT(pseudo-HEMT,即赝配HEMT)表现尤为特殊,它能够非常显著地改善HEMT的跨导和电流密度,因此具有广阔的应用前景。
- The overvoltage varies inversely with the current density to some extent. 超电压在某种程度上随电流密度成反比地变化。
- Much attention is paid on the economic current density in the conductor. 很重视对导体中的经济电流密度的评估。
- Tunneling process is important in the low to moderate current density range. 在中等及中等以下电流密度下,隧道穿透过程是重要的。
- The current density reduces along with the temperature of hollow cathode rise. 电流密度随空心阴极温度的升高而下降。
- In display technique, excessive luminosity of the spot due to excessive beam current. 在显示技术中,指由于电子束电流太大而产生的光点太亮的现象。参阅beam,spot。
- The conversion increased with the increase in current density and with the decrease of the thickness ofsulfur bed. 实验发现由疏转化为硫酸的量随电流密度的增加而增加,随硫床层厚度的降低而增加。
- The locally uniform temperature field brazing required could be achieved by using large beam diameter, large scanning radius and small beam current. 结果表明:大束斑直径、大扫描半径和小束流的扫描方式可以获得钎焊所需的局部均匀的温度场。
- Tin whisker growth at high current density was more than the one at lower current density. 实验结果显示,电流密度高的试片锡须生长数量较多于电流密度低的试片。
- The result of calculation indicates that if ripple factorof beam current is kept within 9%,the reproducibility can be controlled 1 %. 结果表明只要束流纹波在9%25以内,剂量重复性可控制在1%25以下。
- When the current density finally reaches the steady state,the pore distribtion is complete. 当上升过程结束,电流密度达到稳定值后,孔的分布已完成.
- These collective instabilities can be severe in the LHC because of the large beam current needed to provide high luminosity. 这种集体不稳定性在LHC中会变得更严重,因为为了达到更高的亮度,我们需要更大的粒子束。
- There was no significant difference of the VGCC current density between control group and BFP or HSH971 treated group. 单独应用上述浓度的BFP和HSH971孵育细胞6h,VGCC电流密度较空白对照组差别无显著性。 (P>0.;肠)
- In order to minimize evaporation and loss of Mg, the considerable increasing of accelerating voltage, beam current and welding speed is preferred. 为减小镁元素烧损,在电子束焊接时可适当增加焊接的加速电压与束流,加快焊接速度。
- The anode gas should be humidified as much as possible, when PEMFC operated at low current density. 故PEMFC在小电流密度工作时,应该使阳极气体充分增湿;