短語詞組短語uml activity diagram model uml 活動(dòng)圖模型uml activity diagram semantics UML 活動(dòng)圖語義multidimensional UML activity diagram 多維UML活動(dòng)圖extended uml activity diagram 擴(kuò)展的uml活動(dòng)圖 返回 uml activity diagram