1) Earlier stage signal
前期征兆
2) precursory features
前兆特征
1.
First,the lane way's sketch map and monitoring data of gas content index are analyzed,and then the precursory features in abnormal gas-effusing area are extracted as the eigenvectors of pattern recognition so as to analyze the dynamic working situation in lane way and judge whether there is the possibility of abnormal gas-effusion.
提出利用模糊模式识别技术对瓦斯涌出异常进行动态预警的新思路;通过对已知巷道的瓦斯含量监测数据和素描图进行分析,提取引起瓦斯涌出异常的前兆特征作为模式识别的特征向量,来对实时监测的巷道的工况进行判断,确定其是否存在瓦斯涌出异常的可能性。
4) Precursory characteristics
前兆特征
1.
The precursory characteristics of anisotropic degree of georisistivity and dynamic response in earthquake fluid;
地电阻率各向异性度前兆特征与地震流体动态响应
补充资料：征兆
1.征候，先兆。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条