Polymer Derived Precursor
Earthquake Precursor
地震前兆
地震预报
数字化形变观测资料
短临前兆
前兆异常
异常变化
井水水位
earthquake micro precursor
Earthquake activity and precursor anomaly
drug precursor chemicals
Disinfection by-product precursor
digitalized precursor observation data
DIGITAL EARTHQUAKE PRECURSOR NETWORK
Digital earthquake precursor data
delayed neutron precursor
Dehydration of the precursor
cyclic phase volume fraction of precursor fiber