The gauge gas pressure inside the membrane (corrected forZm) required to overcome the stiffness of the membrane and move itinward to a center-expansion of 0.05 mm (a negative gauge or suctionpressure, but recorded as positive) with only ambient atmosphericpressure acting externally.
The gauge gas pressure inside the membrane (corrected forZm) required to overcome the stiffness of the membrane and move itoutward to a center-expansion of 1.10 mm against only the ambientatmospheric pressure.
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