6 Z9 z% p& Q) O/ p4 j帮助文件这个目录下有讲解的: ! s( [" a2 Z. n' GReference Help > Material Flow Objects > Shared Properties of the Material Flow Objects > Attributes of the Material Flow Objects > Attributes for Setting Times of the Material Flow Objects 1 A( R- o+ u6 v* k, A6 q/ V