the return stroke的意思|示意

This upward leader connects with the downward leader and a return stroke occurs. Five more dart leader-return strokes follow.

上行先导与下行先导连接，于是产生了一次回击，随后又是五次以上的直窜先导型回击。

The lightning branches out in many different directions, causing one leader to make a connection with the ground, creating a bright return stroke.

闪电在许多不同的方向长出分叉，激发了一个先导与地面连接，制造了一次闪亮的回击。

Top technology and advanced design make force deployed evenly on the frame and lower the air resistance for a stable and prompt return stroke.

顶尖工艺与先进设计，让拍框均匀受力、降低风阻，回球稳定快速。

Seem to thing horizontal stroke is in in the head, Zun er often is in nervous condition, seem to stem like, how to return a responsibility? Have treat?

好象有东西横在脑里，左耳经常处于紧张状态，好象堵住似的，怎么回事啊？有治吗？

There are some differences for the mean of return stroke currents in different regions.

不同地区地闪回击电流平均值略有不同。

With the transmission line model of the lightning return stroke, the approximate expressions of the adjacent field of lightning electromagnetic pulse are obtained.

采用雷电回击电流的传输线模型得到了雷电电磁脉冲场的近场近似。