V2EX loxodrome

Loxodrome

释义 Definition

loxodrome(也叫 rhumb line)指“恒向线 / 罗经线”:在地球表面上一条曲线,与所有经线相交的角度都保持不变。在墨卡托投影地图上,loxodrome 通常表现为直线,因此在航海导航中很常用(但不一定是地球表面两点间的最短路径)。

发音 Pronunciation (IPA)

/lksdrom/

例句 Examples

The ship followed a loxodrome to keep a constant compass bearing.
船只沿着恒向线航行,以保持恒定的罗盘航向。

On a Mercator chart, the loxodrome appears as a straight line, which is why it was so practical for traditional navigation.
在墨卡托海图上,恒向线看起来是一条直线,这也是它在传统航海导航中非常实用的原因。

词源 Etymology

来自希腊语词根:loxos(λοξ,“倾斜的、斜向的”)+ dromos(δρμο,“跑道、路径”),合起来可理解为“以斜向穿过经线的路径”。该词多用于地理、制图与航海语境。

相关词 Related Words

文学与著作中的用例 Notable Works

  • The American Practical Navigator(Nathaniel Bowditch,《鲍迪奇航海手册》;航海经典工具书中讨论恒向线与大圆航线)
  • Map ProjectionsA Working Manual(John P. Snyder;地图投影权威手册中讲解墨卡托投影与loxodrome关系)
  • Admiralty Manual of Navigation(英国海军部《航海手册》;涉及恒向线/罗经线的导航计算与应用)
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