英德
有道
百度
谷歌
图片
维基
百科
初动
[地物] first motion
onset
onset
- 全波模型震相分析法可用来研究震相的初动方向。
The full wave model phase analysis can be used to study the first motion direction of waves. - 提出了提取快、慢剪切波初动的线性变换方法。
A linear transformation method to extract the onset of fast and slow shear waves is proposed in this paper. - 此方法简单明了，在有感地震发生后能随时判断以后的P波初动方向，一旦方向改变说明不会再有大地震来了。
It has been found that after a big earthquake in a group of earthquakes, if the following earthquakes have changed their direction of P-wave onset, the main earthquake has passed.
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