**3. Techniques of metallic foil electrically exploding driving highvelocity flyers and magnetically driven quasi-isentropic compression**

The techniques of metallic foil electrically exploding driving highvelocity flyers and magnetically driven quasi-isentropic compression have been widely used to research the dynamic properties of materials and highvelocity impact phenomena in the conditions of shock and shockless(quasi-isentropic or ramp wave) loading. By means of these two techniques, we can know the physical, mechnical and thermodynamic properties of materials over different state area (phase space), such as Hugoniot and off-Hugoniot states.
