【磁年變】
<P align=center><STRONG><FONT size=5>【<FONT color=red>磁年變</FONT>】</FONT></STRONG></P> <P><STRONG>英語翻譯：magneticannualchange,annualrate,annualchange</STRONG></P><P><STRONG></STRONG> </P>
<P><STRONG>【辭書名稱】測繪學辭典</STRONG></P>
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<P><STRONG>地球磁場以一年為週期且小而規則之變化量。</STRONG></P>
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<P><STRONG>又稱為磁年差，年磁變等。</STRONG></P>
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<P><STRONG></STRONG> </P>轉自:http://edic.nict.gov.tw/cgi-bin/tudic/gsweb.cgi?o=ddictionary
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