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14#
發表於 2007-9-2 12:37 AM
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Originally posted by alienck at 2007-9-2 12:32 AM:: l6 ?: k7 i+ r' o( w# x& A
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4 L7 G k3 z( f# S# a3 h0 I可能係3m/s吧............ 9 n8 {; Q7 v( I, t5 m6 t
, C, \8 \3 C! U- ^, T& `: s6 L0 g另外; g& C0 R7 T+ w
1 U.S. survey mile (also called "statute mile") = 1 mi = 5280 ft3 t; H/ X. j0 n
1 international mile = 1 mi = 5280 ft6 Y1 s: W4 R; T/ F" P/ ~. \
1 ft = 0.3048 m
! H" ?& J7 Y( h( F9 K! @所以 1mi = 1.6km
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/ [& U7 \2 z4 I, O4 r+ b, R* Tref: NIST |
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