zhè / xiàng / yán / jiū / fēn / xī / le / shā / jī / kuàng / chuáng / zhōng / jīn / shǔ / zī / yuán / de / fēn / bù这项研究分析了砂积矿床中金属资源的分布。This study analyzes the distribution of metal resources in the placer deposit.