isogonic line 等磁差线 ; [地物] 等磁偏线
isogonic chart 等线图 ; 等磁差图 ; 等磁偏线图
isogonic curve 等方位线 ; 等磁偏线
isogonic mapping 等角测绘
isogonic map 等磁偏线图
isogonic lines 等偏线 ; 等磁偏线
zero isogonic line 零值等偏线
isogonic growth 同型生长
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ADJ having, making, or involving equal angles 等角的 [maths]
N an imaginary line connecting points on the earth's surface having equal magnetic declination 等磁偏线 (Also called isogonic line, isogonal line, isogone) [physics]
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