Its gravitational field is on a density suddenchange belt of Bouguer anomaly isopleth. 重力場則處於布伽重力異常等值線疏密突變帶上。
It is often impossible to differentiate between structure and density contrast in determining the source of a gravity anomaly. 在確定重力異常源時，不可能在構造與密度差之間作出抉擇。
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