characteristic of gravity and magnetic anomalies的用法和樣例：
例句
In South China which lies in low latitudes ,there are large quantities of granites and volcanic rocks,whose magnetic fields are different from those in other areas. 處于低緯度的華南發(fā)育了大量的花崗巖和火山巖，其磁場(chǎng)特征不同于其他地區。
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