英语翻译
Thestraightnesstoleranceshallbeindicatedinmmper1000mmofprofilelength,togetherwiththedirectioninrelationtothecrosssectionoftheprofile.
Todeterminethedeviationfromstraightness,fg,theprofileshallbeplacedonasurfaceplate.Anyexternalforceswhichmightinfluencetheactualdeviationfromthestraightlineshallbeavoided.
Thetorsiontolerance,tv,isthepermissibleangulardeviationofastraightlineorformline(feature)ofthetestcrosssectionofaprofileinrelationtotheoriginalcrosssection(seefigure2).Thetorsion,fv,shallbeindicatedindegreesforaprofilelengthof1000mm.
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