Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
spring =
1.
t
2.
ŒË
3.
—F
4.
‰_
ƒŒƒxƒ‹2.
•ÏX
SDAL“‡‰pŒêŠwZ