The delete method removes the current equation, and the restore_next method moves to the next restored object.

delete方法除去当前等式，restore_next方法移至下一个恢复的对象。

youdao

In addition, the check boxes next to the column names in the rectangle representing the table or table-valued object are removed because you cannot specify individual columns to delete.

此外，因为无法指定要删除的单个列，所以在代表表或表值对象的矩形中，列名旁边的复选框已被移除。

youdao

In addition, the check boxes next to the column names in the rectangle representing the table or table-valued object are removed because you cannot specify individual columns to delete.

此外，因为无法指定要删除的单个列，所以在代表表或表值对象的矩形中，列名旁边的复选框已被移除。

youdao