新しい学（定常特性と過度特性 ― 微分と積分 ― ） and, it is a relation between the input and the output because both the change (differentiation) and the sum total (integration) are in the relation of the reverse-operation.
this is a description of conversion from dynamic energy to the electrical energy.
FLiP - グッズ通販 atlantiqs / traingle / kingcobra / drop / americamura fanj twice / big cat /
