麻省理工学院：《polymer engineering》lec 35

echo 22m+C△山,cMP f u\diea: 3)+(3) o Ewprcaire a2丁 C +以 4A x

S PI LA￠ Screus type

swot V(u) u=-1认vP 弋 onmlatov P w如7r.Ey.5a3,5Cb4