ground avalanche的意思|示意

The status in quo of Impulse Ground Penetrating Radar and the general principle of Avalanche Transistor are discussed then a new method for Avalanche simulation is given in this thesis.

为解决探地雷达用于隧道地质超前预报时探测距离小的问题，在分析了雪崩三极管工作原理的基础上，设计了基于两级雪崩三极管串行级联的窄脉冲产生电路。

Placid ground snow awaits the crush of an avalanche descending a rock mountain face in Alaska.

阿拉斯加的岩石山上平静的积雪突然发生的雪崩。