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とうふっかくせん
Meanings
Noun
1. isoclinic line
Alt. forms
等
とう
伏
ふっ
角
かく
線
せん
とうふっかくせん
Composed of
とう
class; order; et cetera; etc.; equal; iso-
ふっかく
dip (angle that the direction of a compass needle makes with the horizon)
せん
line; stripe; line (e.g. telephone line); wire; ray (e.g. X-ray); beam; line (e.g. of a railroad)