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Two in the 300-meter long runway in the same direction and the circular A-line speed is 6 m / s B sp

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Chung Li Zhao2010-01-29 08:01:26 +0000 #1
expedited and accurate Oh,
hu30673252010-01-29 08:16:43 +0000 #2
7X-6X = 300

X = 300
gentle is the last2010-01-29 08:42:11 +0000 #3
306 seconds

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