An ordered set P is called a DLG order if all DLG extensions of P is optimal. A sufficient condition in terms of forbidden suborders for an ordered set to be a DLG order is given.是什么意思_An ordered set P is called a DLG order if all DLG extensions of P is optimal. A sufficient condition in terms of forbidden suborders for an ordered set to be a DLG order is given.在线翻译_英语_读音_用法_例句