Read Edit View history 砂积矿床 shājīkuàngchuáng placer Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 砂积矿床/砂積礦床 · shājīkuàngchuáng · placer 2026/03/04 砂积矿床 / 砂積礦床 shājīkuàngchuáng placer placer (alluvial deposit containing valuable metals) 在地质勘探中，发现大规模的砂积矿床具有重要的经济价值。 created sense Mar 4, 2026, 02:25 AM