精留 せいりゅう塔 とう

seiryūtō

1. Not a refining column.; Not a rectification tower.

1. Was a refining column.

1. Distillation column in/at

1. Reflux tower's; Of a reflux tower

1. It is not a refining tower.; It's not a distillation column.

1. It's not a refining tower.; It isn't a refining tower.

1. Was a refining column.

1. Reflux tower.; Distillation column.

1. Not a refining column.; It is not a refining column.

1. Wasn't a refining column.; Wasn't a distillation tower.

1. Probably a refining column.; Probably a distillation tower.

1. Was not a distillation column.; Was not a refining tower.

1. Wasn't a refining column.; Wasn't a distillation tower.

1. Probably distillation column.

1. Was not a refining column.; Was not a distillation tower.

1. If/when distillation column; If it were a distillation column

1. If/when distillation column; If it is a distillation column

1. If/when distillation column; When a distillation column