rule of three

0,82 days and 59 days of short-term prediction and 30 hours of imminent prediction before large earthquake could be made separately by using the method of "Trisection rule of earthquake".

0地震活动时序相关性,采用“震情三分律”方法可分别得到大震前82 d,59 d的短期预测和30 h的临震预测;与此同时,若条件许可再采用“对称填补”方法又可作出强震到来前的“活动范围”预测区。

This thesis mainly expounds an analytical method in structure of the lexicographical sememic description elements, namely the structural trichotomy to the lexicographical sememic description elements.

本文主要阐述了一种对辞书义位描写要素的结构进行分析的方法,即辞书义位描写要素的结构三分方法,该方法将辞书中的义位描写要素从结构上分为核心要素、主干要素、标识要素。

2-D three-component seismic data interpretation in Xujiaweizi rift ar-ea.;

徐家围子断陷区二维三分量地震资料解释研究

For there is three spikes on three-component geophone, current type of geophone cannot adjust azimuth and inclination in the condition of tight coupling between earth and spike, so there is serious fault in it.

已有的三分量检波器在尾锥与地表紧耦合条件下 ,无法调节方位角及倾角。

In order to improve the resolution and accuracy of 3-D seismic exploration, a novel type of three-component photoelastic fiber optic accelerometer is designed.

为提高三维地震勘探的分辨率和精度,设计了一种新型的三分量光弹光纤加速度传感器,对加速度的敏感由光弹晶体、质量块、复合臂弹簧片构成的弹性系统实现。

The seismic technology of 3-component digital geophone.;

数字检波器三分量地震勘探技术的应用

Study on near-surface survey by 3-component(3-C) shallow refraction;

三分量小折射表层调查研究