This paper puts forward the conceptions of semi-flexible units and semi-flexible system, and builds up the theory of semi-flexible output type and repairable pr
Necessity of land reclamation is discussed, setting out viewpoint of sustainabledevelopment and land connotation and its attribute and combining destroyed forms
According to detonation theory and hydrodynamic principle, a physical model has been set up in this paper. Based on the model a methodology for calculating dyna