短語詞組短語heavy placer mineral anomaly 重砂異常heavy sand mineral 重砂鑛物heavy -mineral dispersion flow 重鑛物分散流heavy mineral distribution 重鑛物分佈heavy mineral prospecting 重鑛物勘探heavy mineral anomalies 重砂異常heavy mineral characteristics 重鑛物特征heavy mineral map 重鑛物圖 返回 heavy mineral