These are a great deal of problem on the method of control investment in the preiod of design which is not resolved, although inportance of investment control in the design phase in often mentioned in academic cycle.

• 长期以来，理论界对于设计阶段投资控制的重要性提得较多，而对于设计阶段投资控制的方法，还有大量的问题没有解决。