阴极区是指在电弧焊时，电弧紧靠负电极的区域。阴极区很窄，约为10^-6~10^-2厘米。焊接电弧中，靠近阴极表面的部分叫做阴极区。它不断地向弧柱发射电子，使电弧稳定燃烧。
进入近阴极区的带电粒子是携带有能量的。
The charged particle which enters the near cathode zone carries some energy.
热阴极辉光放电的阳极区与阴极区一样，是一个很薄的区域。
The anode fall region is also a very narrow gap like the cathode fall region.
热阴极辉光放电的阳极区与阴极区一样，是一个很薄的区域。
The anode is also positioned such that there is no gap between the anode and the non-light-emitting area.
应用推荐