说明：  地下圆柱体的重力异常、Vxz、Vzz、Vzzz；台阶体的重力异常、Vxz、Vzz、Vzzz；板状体的Vxz、Vzz的数据，并保存为TXT格式
(Gravity anomalies underground cylinder, V Xz, Vzz, Vzz stepped body gravity anomaly, Vxz, Vzz, Vzzz Vxz plate-like body, Vzz data, and save it as TXT format)