Sandig桑迪希sandn.沙；沙子；沙滩；黄灰色vt.撒沙；打磨；以沙掩盖sandglass structure沙钟构造sand control packer防砂封隔器sand-blast barrel喷砂清理滚筒, 喷砂器sand-pump dredger抽砂挖泥机船sand-proof pillar防砂煤柱sand-mud interbed砂泥岩互层sand-blast finish喷砂磨光sand compacted pile挤密砂桩Sandfly fever virus沙蝇热病毒, 白蛉热病毒sand control factor影响因素