短语词组短語Coarse silty sand class 粗粉砂級Coarse -sand facies 粗砂巖相coarse grain sand 粗粒砂coarse -grained sand 紋理粗糙沙;粗粒砂loamy coarse sand 壤質粗砂;壤質粗砂〔土very coarse sand 極粗砂loam coarse sand 壤質粗砂 返回 coarse sand