1·The space charge layer formed during point discharge process is not enough to prevent the leader from marching, and can not prevent the forming of upward leader, either.
人工尖端放电形成的空间电荷层既不足以阻止先导的继续推进，也不能防止产生上行先导。
2·A randomly stepped leader propagation model is proposed to investigate the gas discharge phenomena in SF6 circuit breaker.
提出了模拟SF 6断路器中气体放电过程的随机步进式先导贯穿模型。