returned sand

英 美
  • 回用砂
  • returned adj.归还的;归来的动词return的过去式和过去分词.
  • sand n.沙;沙子;沙滩;黄灰色vt.撒沙;打磨;以沙掩盖
    1. The ash turns from black to grey and is a silicate with similar characteristics as foundry sand.
      灰烬从黑色变灰色,并且是一种与铸造用砂特征相似的硅酸盐。