There are two high value trop of gravity anomaly in the central rise belt-second order structure unit of the Northern depression are the oil and gas prospect district.
对其中的北部坳陷中的二级单元——中部隆起带，提出它的两个重力高值隆起圈闭区是有利的两个含油气远景区。
The favourable conditions of the deep development of the earthquakes are:the gravity anomaly gradient belt;
深部孕震的有利部位是：区域性重力梯级带；
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