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declination,我猜是磁偏角的意思吧,你试试搜索下澳大利亚墨尔本那,磁偏角应该是多少,设置下。
我googling一下,大致是Melbourne is Declination = 11° 48' E changing by 0° 0' E/year
每年的变化,可以忽略不计。附上我搜索的网页:http://www.iceinspace.com.au/forum/showthread.php?t=29667
Nothing is impossible

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