extraction column

• 萃取柱,提取柱

extraction column的用法和样例：

例句

1. The column is surmounted by a statue.
   柱顶上树立了一尊雕像。
2. The structure and surface property of packing have distinct effect on packed bubble extraction columns.
   填料的结构与表面性能对鼓泡填料萃取塔性能有直接影响。