4. Rule for elongation or reduction of R D All R.D. in the region where K1 and K2 makes an obtuse(acute) angle will increase (reduce) its length after twinning
8 1 Characteristics of Gas-solid Two Phase Flow Rosin-Pammler formula R(dk)=exp(,/d) R(dK-weight percent of particle with d > dK n-index of non-evenness