Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
fluid =
1. ˆÕ
2. —a
3. ‰v
4. ‰t

ƒŒƒxƒ‹5. •ύX
SDAL“‡‰pŒêŠwZ