Cercetarea procesului de lucru al instalaţiei a demonstrat că puterea şocului N este determinată de câţiva factori independenţi. Utilizarea π – teoremei cu 13 variabile de bază a demonstrat că procesul de lucru al instalaţiei poate fi descris de zece (13-3 = 10) combinaţii (criterii de similitudine) π 1, π 2... π 10.
In research of a working process of the installation was established, that the power of impact N depends on the several independent factors. With usage π - theorems are analyzed 13 basic variables and it is established, hat the working process of the installation can be described by ten (13-3 = 10) combinations (criterion of resemblance) π1, π2 ... π10.