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二次曲线的准线。The directrix line of a conic.

一年生草本根圆锥形或具刺。Herbs annual. Roots conic or spinose.

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一条直线相对于一条二次曲线的极点。The polar point of a line with respect to a conic.

设有一组平行线与圆锥曲线相交。Consider a family of parallel lines that cut the conic.

单列圆锥滚子，有保持架。可分离。Single-row conic roller , with the cage , and separable.

亚婆罗尼主要地是以他对于圆锥曲线的研究而闻名的。Apollonius is chiefly noted for his work on conic sections.

园锥滚柱轴承，承载力大。Conic roller bearing is used for desirable bearing capacity.

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他的主要著作是关于圆锥线的，但也写过其他方面的著作。His chief work was on the conic sections but he also wrote on other subjects.

直线与圆锥曲线的题型是高考必考内容之一。Line with the conic question is one of the content of college entrance examination.

二次曲线是计算机图形学和计算机辅助几何设计中的基本体素之一。Conic curve is a basic element in computer graphics and computer aided geometric design.

第三章，我们提出了一类基于锥模型的非单调信赖域算法。In chapter 3, we present a nonmonotonic trust region algorithm based on the conic model.

实验结果表明它们在限定的工作范围内具有良好的二次曲线关系。Their results demonstrate good conic relationship if the implementation range is defined.

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由于圆锥屋顶象征着曼西帐篷，故经常用于现代建筑当中。That’s why in modern architecture conic roofs are often used. They symbolise a Mansi tent.

本文就过圆锥曲线外的点作其法线的方法进行研究。A study on the method of drawing conic normal lines through a given point outside the conic.

公司可生产多个品种的公制轴承和英制圆锥轴承。The company is many more producible the metric bearing of breed and imperial and conic bearing.

但是不要要求对他的优雅证明的解释，除非你对圆锥截面感兴趣。But don't ask for an explanation of his elegant proof unless you are interested in conic sections.

SJSZ系列锥形双螺杆挤出机，是一种适合于各类PVC粉料挤出的专用设备。SJSZ series conic twin-screw extruder is professional equipment for extruding kinds of PVC powder.

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文章以圆锥曲线教学为例，论述了如何培养学生的创新能力。The paper discusses the ways to cultivate students creativity by example of teaching conic section.

该数据格式的出现，为二次曲线单元图形在电子束曝光技术中的广泛应用奠定了良好的基础。A conic primitive based intermediate pattern and its data format of electron beam lithography are defined.

双锥螺杆，自动连续喂料，产量大、密度高、无气泡。Double conic screw, continuous automatic material supply, large output, and high density, without bubbles.