directrices

常見例句

• A fixed point whose relationship with a directrix determines a conic section.
  焦點一個與準(zhǔn)線的關(guān)系決定圓錐形狀的定點
• A solid bounded by two parallel planes and such a surface,especially such a surface having a circle as its directrix.
  圓柱體由兩個平行平面和這樣的表面，特別是有一個圓作為其準(zhǔn)線的平面所形成的柱體
• A solid bounded by two parallel planes and such a surface, especially such a surface having a circle as its directrix.
  圓柱體由兩個平行平面和這樣的表面，特別是有一個圓作為其準(zhǔn)線的平面所形成的柱體
• The coastline is the base directrix divides the region of sea and land management.
  海岸線是劃分海洋與陸地管理區(qū)域的基準(zhǔn)線。
• The surface generated by a straight line,the generator,passing through a fixed point,the vertex,and moving along a fixed curve,the directrix.
  錐面由一條直線，即母線，通過一固定點，即頂點，沿一給定曲線，即準(zhǔn)線，連續(xù)移動而產(chǎn)生的平面。
• The surface generated by a straight line, the generator, passing through a fixed point, the vertex, and moving along a fixed curve, the directrix.
  錐面由一條直線，即母線，通過一固定點，即頂點，沿一給定曲線，即準(zhǔn)線，連續(xù)移動而產(chǎn)生的平面
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