translate English to French: Actual speed = nnorm x (0.45 x nlo + 0.45 x npref + 0.1 x nhi - nidle) x 2.0327 + nidle (4)
Régime réel = nnorm x (0,45 x nlo + 0,45 x npref + 0,1 x nhi − nidle) x 2,0327 + nidle (4)