[地物]无偏线；无磁差线

agonic line───[地物]无偏线；无磁差线

isogonic lines───等磁偏线；等偏线；等磁差线

aclinic lines───[地理]无倾线

sonic mines───n.感音水雷

tonic wines───滋补酒

Maginot lines───马其诺防线；盲目依靠的防线

isogonic line───等（磁）偏线

aclinic line───[地理]无倾线

advice lines───咨询热线

Geographical lines do exist where true north and magnetic north are aligned, and these are called agonic lines.───北和磁北相吻合的时候，确实存在一些被称为无偏线的地理线。

Geographical lines do exist where true north and magnetic north are aligned, and these are called agonic lines.───当真北和磁北相吻合的时候，确实存在一些被称为无偏线的地理线。

Geographical lines do exist where true north and magnetic north and these are called agonic lines.

Geographical lines do exist where true north and magnetic north are aligned, and these are called agonic lines.