But === Return results in generalized coordinates to the physical base. This operator makes it possible to reproduce in physical space the results obtained on a system in generalized coordinates by modal recombination methods. The product concept is a concept such as: * dyna_trans if the generalized results come from a calculation by modal recombination or following the extrapolation of the results of experimental measurements on a numerical model (the input concept is of the tran_gene type), * mode_meca for the reproduction following a modal calculation with projection on a modal basis (the input concept is of the mode_gene type), * dyna_harmo for the reproduction following a harmonic calculation with projection on a modal basis, without substructuring (the input concept is of the harm_gene type).