VORM LIKE 土 RIN LAS[l< F ILAMENTS s √s Bending Emrst= 2 E工 dNs.F v ERSIS TENCE Le心T计 <t(s).t(s+as))=exp △s E工 P BENDIN E NERo 2 E t见 &s 2 RELATION。= WLc E FsC <&7=2 2 P exP LC P P <R27→L ti ble KR2722PL P