sonic nozzle meaning in Hindi

It came true to take advantage of transfer standard to compare and analyze the naturalgas standards of measurement on site . the dissertation used the transfer standards to take the site comparative experiments to the sonic nozzle standard measurement of the nation crude oil great flux measure station carried by vehicle and the standard measurement of the general pertrifaction plant . it evaluated and analyzed the measure capability of these two standards , thus to keep them fulfilling the rules of the verification and the regulations of relative criterions