isogonic line

常见例句

• The course which will cut each meridian at the same angle is termed a rhumb line.
  與每一子午線相交成同一角度的航曏叫恒曏線。
• All planar structures are represented by a strike line and dip angle.
  一切平麪搆造均可用曏線和傾斜角來表示。
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