TM 55-2835-208-23GLOSSARYSection 2.DEFINITIONS (Continued)TERMDEFINITIONDDentA completely smooth surface depression caused by pres-sure or impact from a smooth ball-like foreign object.T h e p a r e n t m a t e r i a l i s d i s p l a c e d , b u t u s u a l l y n o n e i sseparated .D i s t o r t i onTwisting or bending out of a normal, natural or originalshape,usually caused from being exposed to excessivep r e s s u r e o r t e m p e r a t u r e e i t h e r w h e n r e s t r a i n e d o r u n-r e s t r a i n e d.EErrosionWearing away of metal.FF e r r u l esMetal band or socket.Foreign MaterialForeign ObjectFrayingGGougeKKinksSee Contamination.Any object such as a tool, piece of equipment, APU part(nut, bolt, l o c k w i r e ) t h a t c o u l d i n a n y w a y d a m a g e t heAPU .Wearing or rubbing of areas, generally used in referenceto damage on wire-braid covering (of teflon hose) or onthermocouple harness.A w i d e r o u g h s c r a t c h o r g r o u p o f s c r a t c h e s , u s u a l l y,w i t h o n e o r m o r e s h a r p l y i m p r e s s e d c o r n e r s,a n d f r e -quently accompanied by deformation or removal of parentm e t a l.Short,t i g h t t w i s t s o r c u r l sc a u s e d b y a d o u b l i n g orwinding of a hose or line upon itself.Likely to caused i f f i c u l t i e s i n t h e o p e r a t i o n .GLOSSARY 3
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