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suction surface pressures

Is the use of "suction surface pressures" in the following sentence correct grammatically? If it is not, kindly suggest ways to make it clearer.

On the other hand, with increased blade loading on the blade surface (use of thicker airfoils), suction surface pressures are reduced, and the velocity and Mach number over the suction surface increase with the local Mach number reaching supersonic values.

Is it better to use of "pressure of suction surface" or "pressures on the suction surface"?