Sandag桑达格
sandn.沙;沙子;沙滩;黄灰色vt.撒沙;打磨;以沙掩盖
sand control forest防砂林
Sandpile experiment沙堆实验
sandpaper surfacing砂皮状路面
sand/gravel rock砂砾岩
sand-clay surface砂泥路面
sand-pump sampler砂泵取样器
sand precaution law防沙法
sand bath tempering砂浴回火
Sandia Wind Balloon桑迪亚测风气球
sand inclusion mark夹砂痕