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