- Twokindsofmechanicaldamagedefectssuchasgougesanddentsweredetectedintheexperiment.Longrichdiscoveredat.rexfossilwithlargetoothgougesinit.Surfaceimperfections,suchasslivers,scabs,burrs,weldsplatter,andgouges,shallberemovedbygrinding.Tharsisissurrounded...
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