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