1.In many ways, activity diagrams are the object-oriented equivalent of flow charts and data-flow diagrams (DFDs) from structured development.
在很多方面，活动图是结构化开发中流程图和数据流程图（DFD）的面向对象等同体。
2.This technique is the easiest to perfect but has never produced like the DFD or the downstream retrieve.
这种技巧是最容易达至完美，但其中鱼率远不及DFD或下游检索。
3.Design for Disassembly and Recycling (DFD&R) is the important content of Green Design.
面向拆卸与回收的设计是绿色设计的重要内容。
4.Object-flow diagrams (OFDs) are similar to data-flow diagrams (DFDs), because they depict activities interfacing with other activities.
对象流图（OFD）与数据流图（DFD）类似，因为它们描述了活动和其他活动间的接口。
5.DFD Technology and Its Application in the Structure Design of Electrostatic Oiler
DFD技术及其在静电涂油机结构设计中的应用
6.Design of the Data Acquisition and Control System for DFD Wind Tunnel
DFD风洞数据采集与控制系统设计
7.Footprint Boundary Extraction Based on DFD Parametrically Deformable Models
基于DFD参数变形模型的平面足迹轮廓提取
8.Analysis and Design about Data Dictionary Management Tool of DFD
DFD数据字典管理工具的分析与设计
9.Footprint Boundary Finding Based on DFD Parametrically Deformable Models
基于遗传算法的DFD参数变形模型轮廓提取
10.A Rapid Video Segmentation Algorithm Based on Symmetrical DFD
一种快速的基于对称差分的视频分割算法