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每小時快3分鐘,那麼這塊表的一小時實際上是 60/63 小時,所以 這是測量得到的速度是 50×60/63 ≈ 47.619(千米/小時) -------------------- 梳理知識,幫助別人,愉悅自己. “數理無限”團隊歡迎你
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