umbilic是什么意思_umbilic怎么读_umbilic的音标

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umbilic
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单词大全
更新时间
2026-11-06 20:57:34
「umbilic」是一个常用成语,以下为其拼音、释义、出处、用法、典故及例句等详细内容,供学习与查阅参考。

脐点(数学中曲面上所有法线相交的点,或主曲率相等的点);脐(肚脐)

“umbilic”的音标:

英式 /ˈʌmbɪlɪk/;美式 /ˈʌmbəˌlɪk/

“umbilic”的用法和例句8句:

  • In differential geometry, an umbilic is a point on a surface where the normal curvatures are identical in all directions.(在微分几何中,脐点是曲面上所有方向法曲率相等的点。)
  • The sphere is the only surface where every point is an umbilic.(球体是唯一所有点都是脐点的曲面。)
  • For a surface of revolution, the poles often serve as umbilics due to rotational symmetry.(对于旋转曲面,极点常因其旋转对称性而成为脐点。)
  • To find umbilics on a quadric surface, one must solve the equation derived from the equality of principal curvatures.(要在二次曲面上寻找脐点,必须通过解主曲率相等的方程来求解。)
  • Umbilics play a key role in classifying the local shape of surfaces, such as elliptic or hyperbolic points.(脐点在分类曲面局部形状(如椭圆点或双曲点)中起关键作用。)
  • At an umbilic, the Dupin indicatrix degenerates into a circle, indicating isotropic curvature.(在脐点处,杜邦指示线退化为一个圆,表示各向同性曲率。)
  • Some minimal surfaces, like the Enneper surface, can have isolated umbilics.(某些极小曲面,如恩尼珀曲面,可以有孤立的脐点。)
  • The umbilic of a fetus is connected to the placenta via the umbilical cord, providing nutrients.(胎儿的脐通过脐带与胎盘相连,以获取营养。)
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来源:词义通 | 更新时间:2026-11-06 20:57:34 | 如有错漏欢迎反馈纠错

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