Its gravitational field is on a density suddenchange belt of Bouguer anomaly isopleth. 重力场则处于布伽重力异常等值线疏密突变带上。
It is often impossible to differentiate between structure and density contrast in determining the source of a gravity anomaly. 在确定重力异常源时,不可能在构造与密度差之间作出抉择。