麻省理工学院：《polymer engineering》p 14

AR (a;-v+以BT-以&T -MPAT C0- e、(zs-Ubc-l6 E147e7 ↓一· 22re=yosa rkc 4 tw:以 仨≤ ES T C3zea C12 4 4a气7e)(t- b88:w