不可定向的曲面  nonorientable surface; non-orientable surface

可定向曲面  orientable surface

不可定向的  non-orientable (manifold

不可定向流形  non-orientable manifold

不可定向四维流形  nonorientable 4-manifold

不可定向周线  nonorientable contour

定向不定性  directional instability

可定向曲体  orientable manifold

面-面定向排列  face-to-face way orientationally arrangement

不定向[的]  omnidirectional

不定向逼近法  undirectional approach

不定向的  Unoriented; 4-Nitroquinoline; astatic; non directional; non directive; nondirective

不定向动作  undirected action

不定向风  baffling wind

不定向硅钢板  non-oriented silicon steel sheet

不定向计数器  non-directional counter

不定向流形  one-sided manifold

不定向毛羽  unsure hairiness

不定向趋近法  unidirectional approach