sand stone

sand source control area [經(jīng)濟(jì)學(xué)]沙源治理區(qū)

sand sole

sand soil layer [土木建築工程]砂土層

sand soil 砂質(zhì)土

sand slime separator [經(jīng)濟(jì)學(xué)]砂泥分離器

sand sheet 蓆狀砂；薄砂層；沙蓆；[地理] 小沙原

sand shark

sand sediment trap cleaning [土木建築工程]窨井清掏

sand sediment trap [經(jīng)濟(jì)學(xué)]沉沙槽

sand riverbed [水利工程]沙質(zhì)河牀

sand quarry 採砂場

sand pump bucket dredger [交通運(yùn)輸工程]自敭鏈鬭挖泥船

sand prevention 防砂

sand pit 砂坑；採沙坑

sand piles

sand pile

sand pebble soil [土木建築工程]砂卵石土

sand papering machine [經(jīng)濟(jì)學(xué)]砂紙加工機(jī)

sand paper [木] 砂紙