[en] The results of experimental study on the liquid distribution over the channel section with the help of an izokinetic probe are presented. Obtained are the profiles of liquid mass velocity, real volume steam quality and concentration, and also the liquid distribution between the nucleus and near-wall region flow at pressures of 6.85, 9.80 and 13.70 MPa, flow mass velocities of 500, 750 and 1000kg/m²xs and at steam quality from 0.15 to 0.91. On the basis of the study results the liquid distribution over the channel section it is obtained that in a developed annular-dispersed flow the liquid is uniformly distributed over the flow nucleus section (P=6.86 and 9.8MPa), or has the maximum in the channel centre (P=13.7MPa). This conclusion is confirmed also by the calculation of drop trajectories. Assumptions and calculation data, confirmed experimentally, testify to the existance of parameter ranges, where the drop falling from the flow nucleus on a channel wall under adiabat conditions is absent. Semiempiric ratio for the calculation of liquid share, flowing in films