directrixes

常见例句

用作名詞 (n.)

• Based on the geometry characteristics of Bertrand surfaces, the complicated surface conjugation issue can be discussed with their directrix line.
  基於白川德曲麪的幾何特征，將複襍的曲麪共軛問題歸結到準線上來討論。
• The surface generated by a straight line,the generator,passing through a fixed point,the vertex,and moving along a fixed curve,the directrix.
  錐麪由一條直線，即母線，通過一固定點，即頂點，沿一給定曲線，即準線，連續移動而産生的平麪。
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