常见例句双语例句The shaped technique of the electric arc tube's shell with neck, which is used in the small power metal-halide lamp, is introduced in this paper.超小功率高强度气体放电灯电弧管电极极间距误差要求小，二电极对中要求高，所以采用在电弧管泡壳两端加缩颈来定位电极。 返回 electric-arc lamp