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海里为什么比公里大
更新时间: 2020-11-06 00:00:00  

海里比公里大是因为海域广阔,必须得用大计量单位。海里是国际度量单位。1海里=1.852公里。标准符号nmile。它等于地球椭圆子午线上纬度1所对应的弧长,一度等于六十分,一圆周为360度。

关键词: 海里 为什么 公里

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