{HEAD ~ The invention} gives {TAIL ~ rules} how additional hydrodynamic bearing portions can become provided on the outer portions of the piston shoes, whereby those portions will carry an additional load by hydrodynamic actions 
{ HEAD ~ The invention } gives { TAIL ~ rules } how additional hydrodynamic bearing portions can become provided on the outer portions of the piston shoes , whereby those portions will carry an additional load by hydrodynamic actions
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