查询词典 ellipse

It makes use of the geometric relations between an ellipse and its circumcircle and inscribed circle.

引言对于象光栅显示器这样一类可视化的设备，其图形完全由显示器像素的亮度和色度形成。

Select the Ellipse tool, white color from palette and draw a circle for the screw.

选择椭圆工具的，白色的调色板和画一个圈的螺钉。

The experiment individually focused on the velocity distribution of concentration ellipse shape represented in oxidation ditches existed in sewage treatment plants, and confirmed the rationality of aeration and the submersed flow driver power designed.

该试验在实际污水处理厂进行，对采用同心椭圆型沟道的Orbal氧化沟的流速分布进行了的测定，重点研究了Orbal氧化沟的水力流态特征，验证了曝气及水下推动设备功率配置的合理性。

The survey of similar Orbal oxidation ditch is focused on the velocity distribution of concentration ellipse shape and concentric circles shape represented in oxidation ditches, analyzes the rationality of its device allocation and the problems shown in velocity profile, proposes the improved treatment.

现场同类Orbal 氧化沟流场的实测研究了椭圆形和圆形两种Orbal 氧化沟的水力现象，分析其设备配置的合理性，针对流速分布中出现的问题进行分析并提出了改进的措施。

The survey for similar Orbal oxidation ditch was performed on-the-spot for safety of engineering design. The experiment individually focused on the velocity distribution of concentration ellipse shape represented in oxidation ditches existed in sewage treatment plants, and confirmed the rationality of aeration and the submersed flow driver power designed.

该试验在实际污水处理厂进行，对采用同心椭圆型沟道的Orbal氧化沟的流速分布进行了的测定，重点研究了Orbal氧化沟的水力流态特征，验证了曝气及水下推动设备功率配置的合理性。

It combines the resolution equations of passive time difference of arrival location with actual movement of underwater target, uses the Extended Kalman Filter algorithm, analyses tracking problem of underwater target and the confidence ellipse for every moment.

将被动时差定位的解算方程与水下目标的实际运动相结合，采用扩展卡尔曼滤波算法，分析水下目标的跟踪问题及其每一时刻的置信椭圆。

This article takes the teaching of conic sections as an example. By designing worksheets, teachers can introduce the historical material about conic sections to students. By way of using Apollonius' definition of parabola, ellipse and hyperbola, teachers can introduce the geometric aspect of "conic section" to students. By using the concept of " latus rectum " in Conics , we can connect "conic sections"-- representation of geometrical aspect, with "the equation of conic sections"-- representation of algebraic aspect to improving insufficiency of text books.

同时本文也试著从历史文本中寻找材料，简单举例说明数学教师可以如何应用这些史料在几何单元教学上，例如三角函数的正余弦定理，最后再以圆锥曲线的正焦弦为例，说明如何利用数学史料於此单元的教学，尤其是阿波罗尼斯的《锥线论》中对圆锥曲线的3个命题，将此3个命题的内容与意涵，尤其是正焦弦在圆锥曲线的几何意义上所扮演的角色，将其适当地融入教学中，将可使学生真正学习圆锥曲线的几何知识，而不再只是代数形式的几何知识。

In order to recognize the 2D shapes, we proposed a set of perspective invariants of a pair of coplanar conics in this paper, we suggest a perspective invariant representation of general planar curve based on ellipse, and give an algorithm using the invariants and the representation to recognize 2D shapes.

为了实现二维形状的透视投影不变性识别，本文推导出了一种共面二次曲线对的透视投影不变量，提出了一种基于椭圆的平面曲线的透视不变性表示方法，并且给出了用该不变量和不变性表示方法实现二维形状识别的算法。

In this paper, a new methodology was proposed based on the connected convex curve searching and ellipse fitting.

本文提出一种基于凸性连通分支搜索结合曲线拟合的多椭圆检测算法。

This system is applicable for the printing on circular ,ellipse and cubical containers for cosmetic

适用于印刷化妆品，药品及食品行业的各种圆形、扁形及方形包装容器。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。