geodesics [dʒi:oʊ'desɪks]

例句:

• In 1728 Euler gave differential equations for geodesics on surfaces.
  1728年,奥伊勒绘出了曲面上测地线的微方程.
  
• Finally, we may need to establish the "orientation" of the fields with respect to geodesics.
  来自SA