提出了前兆场稳定度的概念，利用前兆场稳定度的方法对中强地震前豫鲁冀交界区不同台站和不同手段的前兆观测数据进行分析。

Proposing and using the concept of precursor field stability, the precursory observational data before moderate earthquakes on the boundaries of Henan, Sandong and Hebei are analyzed.

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安阳市恩浩合金耐材有限责任公司，位于安阳市近郊，晋、冀、鲁、豫四省交界处，龙安区北彰武村，冶炼故乡。

Anyang city following the alloy material Co. Ltd. , located in Anyang City, Shanxi, Hebei, Shandong, Henan Province at the junction of four, Bei Zhangwu Cun, Long'an District, smelting hometown.

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