For gas lasers a helical resonator with coaxial ringdischarge structure is proposed, and the theoretical analysis is given.
提出了一种适用于同轴环形放电结构气体激光器的环形螺旋谐振腔，并给出了理论分析。
2
The primary air velocity is the highest at the nozzle ring, and this is an important factor to affect the discharge of pyrites.
喷嘴环处的风速最高且是影响石子煤排放的一个重要因素；
3
In the discharge created by single pipe cylinder-ring plasma jet electrode and array jet electrode, important factors of discharge, such as waveform of applied voltage and flow rate, are studied.