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地磁赤道 dìcí chìdào
space aclinic equator; geomagnetic equator; magnetic equator
tech. aclinic line (线)
地磁〔磁倾角〕赤道
space dip equator
磁赤道
tech. geomagnetic equator
地磁赤道
: 2 phrases in 1 subject
Space2