6. Dislocation density p ∑l1N1N ① Definition:p= NO of dislocation emergence ②2os,V3,P, Whisker n,△Sb bN、nS bo△ N ot boy6. Dislocation density . ① Definition: ② , , , whisker  A N l l l Nl V l  =  = 1 2 3 1 1  ＝NO. of dislocation emergence  ys Vs  b v t b S N n S l l bN l b l l n S l l u i i i i i      =   = =   =    =  =  3 2 3 1 2 1 3