查询词典 conic section

Source is the Geometer's Sketchpad to do mathematics courseware, documents for the conic common for high sc...

本源程序是用几何画板做的数学课件，文件为圆锥曲线共性，供高中数学教师使用。

The results show that the density of gritstone is decreased gradually as the temperature increasing; so that it can be ignored; the longitudinal wave velocity is linearly decreased when the temperature increasing, and decrease rate of it follows the law of conic; R is one temperature point, which makes the law of tensile strength of gritstone after high temperature follows the law of parabola; and the maximal tensile strength appears when the operative temperature is R. After the temperature is higher than 700 ℃, tensile strength is small and change range is small when the temperature is increased.

结果表明，高温后粗砂岩的密度随试验温度的升高减小幅度很小，几乎可忽略不记；高温后试件中纵波波速的传播随温度升高基本呈线性降低，而减小率呈二次曲线规律变化；存在一个温度点R，使高温后试件的抗拉强度呈开口向下抛物线关系变化，且在R温度作用后试件抗拉强度达到最大；当试验温度大于700 ℃后，试件的抗拉强度变得很小，且当温度升高时变化幅度也很小。

GPLconx - GPLconx is an educational visualization tool that allows exploration of lines and conic sections in three models of 2-D hyperbolic geometry.

GPLconx是一个教学可视化工具，可以观看2D双曲线几何体的三种模型的线条和二次曲线部分。

Some examples are given by inscribed and circumscribed circles of polygons , lines intersecting and tangent to conic sections , the Pappus and Menelaus configurations of points and lines.

一些例子所给予者和限制各界的多边形，线相交和相切的圆锥部分，帕普斯和墨涅拉俄斯配置的点和线。

Based on the Second Desargues Theory and involution theory,a simple drawing method for a conic is presented.

为了使二次曲线的作图更简便，文章以第二笛沙格定理和对合定理为基础，提出了一种新的作图方法。

Keywords : the unity of geometrical material and algebraic symbol, conic sections, latus rectum .

教师藉由数学史的帮助，除了使学生的一些认知障碍获得解决之外，也可促进自己本身的专业成长。

A new wing/body configuration of a glide hypersonic vehicle was presented, which was generated by conic lofting design method.

提出了一种新的翼身融合的滑翔式高超声速飞行器布局方案。

A group modulo n on conic curve can be formed, on which we can construct cryptogram similar to RSA.

同时，还可以建立模n的圆锥曲线群，构造等价于大整数分解的密码。

The second design are two short and thick sleeve monopole antennas, including a conic and a cylindrical conductor.

第二种设计是两种短粗套筒天线，包括一个锥形套筒和一个柱形套筒。

Style filiform; stigma capitate. Fruiting hypanthium obovoid-conic, 7–8 × 3–4 mm including prickles, abaxially 10-ribbed, pilose, with a multiseriate crown of prickles; prickles erect when young, connivent at maturity.

雄蕊(5-)8-15。花柱丝状柱头头状果托杯倒卵球形的圆锥形， 7-8 * 3-4 毫米包括皮刺，背面的10肋，具柔毛，具一皮刺的multiseriate树冠；幼时的皮刺直立，成熟时靠合。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。