短语词组短语Coarse silty sand class 粗粉砂级Coarse -sand facies 粗砂岩相coarse grain sand 粗粒砂coarse -grained sand 纹理粗糙沙;粗粒砂loamy coarse sand 壤质粗砂;壤质粗砂〔土very coarse sand 极粗砂loam coarse sand 壤质粗砂 返回 coarse sand