Sandun.三都
sandn.沙;沙子;沙滩;黄灰色vt.撒沙;打磨;以沙掩盖
sand - fixing固沙
sanding circuit撤砂电路
sand-blastingn.喷砂
sand stone soil砂岩土壤
sand-sprayingn.撒砂
sand filtration砂路
sand-flushing冲砂洗井
sand paper disk[医] 砂纸片(盘)
sand fracturing加砂压裂
sand production出砂