Sandaa桑多
sandn.沙;沙子;沙滩;黄灰色vt.撒沙;打磨;以沙掩盖
sand handling equipment砂子输送设备
sand excavation control河道采砂
sand projection machine抛砂机
sand discharge capacity排沙量
sand-fixing eommunity固沙群落
sand--layered soils夹砂层土壤
sand ionization formula沙堆模型
sandliving sophora seed砂生槐
sand liquefaction index液化指数
sand control completion防砂完井