A polyhedron diversion structure is selected and is proven,through alternative comparison,repeated demonstration and hydraulic model test,to meet design requirement and to reach the intended purpose of design modification.

The on shore test of the engine as a whole and its long term operation at sea have proved that the design modification of the lub oil system represents a complete success with the anticipated performance being realized.

Review and prospect for 300 MW fuel assembly design improvement;

Analysis about shaft gland leakage and design improvement of 200MW steam turbine;

Restoration and design improvement of the base beam crack for the arch-above complex arch bridge;

DY Company s Core Management Incentive Analysis and Design Improvement;

Numerical simulation and design improvement of leading-edge film cooling in an inlet guide vane

According to the design improvement on feed-water control valve of a 50MW and 100MW boiler,this paper illustrates the principle on designing high differential pressure control valve,and DN50;a new thought and method on designing the linetype of PN20 bypass-water control valve has been taken into consideration.

Finite element analysis and improved design of injection moulding board;

An improved design and experimental analysis for refrigerated container property test system based on international standard;

Research and application of DOE technology in the improved design of cab′s suspension system;