This lightning, a negative stepped leader, was filmed from an airplane.
这次闪电是一个负极梯级先导，它是从一架飞机上拍下的。
Eventually a negative stepped leader travels downward and reaches the ground, creating a return stroke.
最终一个下行传播的负极梯形先导接触到地面，制造了一次回击。
As the negative stepped leader gets closer to the tower, a positive leader forms from the tower tip and moves upward.
随着负极梯级先导向塔不断靠近，塔顶端的正极先导形成并且上行移动。
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。
Favorite Google Inc has stepped up efforts to digitize dozens of historical newspapers and make scanned images of the original papers available online, the Internet search leader said recently.
互联网搜索引擎巨头Google公司近日宣布，目前正加大力度，为旧报纸数据化项目做各项准备，经过扫描的原版旧报纸今后也可以在网络上找到了。
As the leader of HR industry in China, SFSC stepped forward again to open up the first "HR EXPRESS" in 2007.
作为中国人力资源行业的领先者，2007年，上海外服再次领先一步，推出了“人事服务便捷店(HREXPRESS)”的服务模式。
As the leader of HR industry in China, SFSC stepped forward again to open up the first "HR EXPRESS" in 2007.
作为中国人力资源行业的领先者，2007年，上海外服再次领先一步，推出了“人事服务便捷店(HREXPRESS)”的服务模式。
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