This article not only expounds the basic structure of bar integration but also explains if we want to develop the steel bar with stable and reliable performance, we must choose the economical, reasonable and effective welding technology.

Based on robust filtering theory,this paper develops polytopic models of uncertain multisensor system and centralized robust fusion estimation by linear matrix Inequality(LMI) method,and proves the exact transforming condition,by which robust centralized estimation can be transformed to the distributed fusion method with the same fusion estimation performance.

To eliminate,prevent or reduce the adverse effects of the Paraffin wax on the production of oil and gas fields,a fast wax removal and prevention process and technology for active metal alloy rods has been developed.

A New Smelting and Casting Technology for TbDyFe Alloy Bar;