x
uploads/rhumb.jpg

rhumb n.【航海】羅盤方位;羅盤方位二點間的角距;羅盤方位線;...

rhumba

Transverse rhumb line 橫切恒向線

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向叫恒向線。