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directrix

/di'rektriks, dai-/

📖 中文释义

  1. n. 准线
  2. [计] 准线

🔗 释义中的汉语词

准线
📘 English Definition（英文释义）
  1. n. A directress.
  2. n. A line along which a point in another line moves, or
  3. which in any way governs the motion of the point and determines the
  4. position of the curve generated by it; the line along which the
  5. generatrix moves in generating a surface.
  6. n. A straight line so situated with respect to a conic
  7. section that the distance of any point of the curve from it has a
  8. constant ratio to the distance of the same point from the focus.
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