jgg     2015 35 (3):  460-463    ISSN: 0412-1961  CN: 21-1139/TG Improvements for the Strike/Dip-Slip Displacement Theory  Formula of General Dip Fault 1 State Key Laboratory of Earthquake Dynamics, Institute of Geology，CEA,A1 Huayanli, Beijing 100029，China 2 Key Laboratory of Earthquake Prediction,Institute of Earthquake Science, CEA,63 Fuxing Road, Beijing 100036, China 3 First Crust Monitoring and Application Center, CEA, 7 Naihuo Road,Tianjin 300180, China 4 Department ofCivil and Structural Engineering, Graduate School of Engineering, Kyushu University, Fukuoka, 819-0395 ,Japan Received: 2015-02-11  Revised: null  Online: 2015-06-02 Supporting info