This cast alloy article is chiefly characterized by having {HEAD ~ coarse and irregular surface contour} of interspersed peaks, valleys and pores that provide for {TAIL ~ increased surface area} for increased fluid contact and provide for increased turbulence in fluid flow 
provide for
This cast alloy article is chiefly characterized by having { HEAD ~ coarse and irregular surface contour } of interspersed peaks , valleys and pores that provide for { TAIL ~ increased surface area } for increased fluid contact and provide for increased turbulence in fluid flow
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