Is the use of "approximately only" in the following sentences correct grammatically and conceptually? If it is not , kindly suggest ways to make it clearer.
In other words, both tip leakage flow and endwall boundary layer flow have a high effect on the total pressure drop across the turbine at high flow coefficients while the turbine torque approximately only is dependent on the tip leakage flow at high flow coefficients.
"only"= more/increased emphasis
"approximately"= The tip leakage flow and endwall boundary layer flow reduce the turbine torque. But the effect of tip leakge flow is much higher than that of endwall boundary layer flow on the torque at high flow coefficients.