说明：  灰色系统进展，主要包括灰色系统发展概况 灰色系统理论持续发展的直接原因 灰色系统理论持续发展的深层次原因 南航灰色系统研究中心简介 中国（双法）灰色系统专业委员会今后工作设想
(The progress of gray system, including the development of gray system theory of gray system direct cause of the sustained development of gray system theory sustainable development of deep-seated causes of Southern Gray System Research Center of China (dual method) Professional Committee of the gray system envisaged for future work)