Value analysis is an edge tool of decreasing cost in a new product development by a branch of Technical Economy, especially in designing phase. It is applying widely.
价值分析作为技术经济的一个分支，在新产品开发设计阶段被视为降低成本的利器，得到越来越广泛的应用。
2
On the other hand, the optimization of DMF method was done by improving tray configuration and decreasing the times of butadiene phase changes.
DMF法流程优化的原则是改进塔板结构，减少丁二烯的相变次数。
3
Then, it puts forward a conflict pre-checking and conflict processing approach. This approach aims at finding and solving conflict during the early design phase and decreasing resource waste.