查询词典 enumerative geometry

Rene Descartes (1596 - 1650), the founder of analytical geometry, is also known as the father of modem philosophy.

勒内 -笛卡尔(1596-1650)，解析几何学的创始人，也称现代哲学之父。

On depending on author's perception of teaching 《analytical geometry》,raising a warning about the phenomenon of student's neglect of the use of vector in exercise,this essay elucidate the preponderance of vector in solving problems about space.

在中学，解析几何课程主要研究平面上一些点、线的几何位置和几何性质，所涉及的点、直线、曲线均共面，它们都落在坐标系所在的平面内。

Combining the teaching practice of analytical geometry, this article puts forward the implement strategy of instruction of mathematics study: penetrate the principle of mathematics study towards the students; instruct the students how to study; help the students form the better non-intellect factor; develop the student's original cognizance level; present the instruction of mathematics study ; raise the extent of students' participation ; keep the teaching and instruction in harmony and instruct the solution of students' query.

结合立体几何教学实践，本文提出了数学学法指导的实施策略：向学生渗透数学学习方法理念：对学生学习的各环节进行学习方法指导；对学生形成良好的非智力因素进行指导；发展学生的元认知水平；数学学法指导的基本方法；提高学生的智力参与程度；教学与学法指导和谐统一；对学生质疑问难的方法进行指导。

Establishing the observation coordinate to acquire the horizontal and vertical components of atmospheric wind in the detecting field by the space analytical geometry theory, completing the inversion of the atmospheric wind.

在观测点建立空间观测坐标系，由此坐标系出发根据空间解析几何的理论，推导出观测场内的大气风场的水平面和垂直于水平面上的分量，给出了风场探测的反演方法。

This paper adopts both analytical geometry and computer animation methods to make a popular nomogram manual called 'polyplot' and proposed a graphical solution with the computer IBM-PC/XT. In comparision with m...

本文针对世界上沿用较广的Polyplot多元图解法，应用解析几何和计算机卡通法相结合，提出一种在IBM—PC/XT上实现的微机图解法，该法是对以往图解法的一种改进，能保持直观，而操作更为简便、精度更高。

After getting these four line-of-sight vectors, we inverse these data in special observation coordinate based on space analytical geometry, then we can get the vector that has three components on every coordinate, this vector will be treated as the total wind profile in the three-dimensional observation field, the result of this four-point method can basically reflect all the spatial and temporal variation of the atmospheric wind.

在得到视线方向风速矢量后，从选定的三维观测坐标系对这四个矢量进行空间解析几何的运算，可得到观测坐标系的各坐标轴上四个测量矢量的各坐标分量的标量和。从而以这个在三个坐标轴上都有分量的矢量作为在观测视场内的总的风场的风速矢量。

It is an important step of the transition for Chinese mathematicians to study and to use the translations of western mathematical textbooks on calculus, analytical geometry, algebra, and probability, such as DWJ, Wei Ji Su Yuan, Jue Yi Shu Xue.

研究晚清中算家对微积分的学习情况、理解程度以及应用能力，无疑对于研究中国数学的近代化历程具有十分重要的意义。

analytical geometry ; mathematics thinking ; teaching experiment

1因此普遍要求中小学数学教师更新观念，改进传统的教学方法，但对高校教师的

In the CAD system for progressive dies, the method is introduced to automatically generate geometric models of stampings through inputting the product drawings by AutoCAD and picking-up the entity information from DXF files and programming with ObjectARX and C＋＋ language, at the same time, generating algorithm of close contour lines and unidirectional chain-table structure are used to express the models of stampings, the class and direct judgment of contour lines are realized and the entity existing side is judged by analytical geometry, which efficiently solves the problem of automatic input of drawings of stamping and providing information of process planning and mold design.

在级进模CAD系统中，将产品的图形信息以AutoCAD直接绘图形式输入到计算机中，从AutoCAD的图形交换文件中提取信息，采用面向对象的二次开发工具ObjectARX和C＋＋语言编写接口程序，并通过封闭轮廓的生成算法自动生成冲裁零件的几何模型，且用单向链表的形式加以表达，同时对冲裁零件图形的轮廓进行分类与走向判定，采用简单的解析几何方法对实体存在侧进行判定，有效地实现了零件图形的自动输入，为级进模CAD系统的工艺计算和模具工作部分的设计等提供了必要的信息。

English Description It aim at: developing comprehension of algebra, trigonometry, analytical geometry, derivation and integral, activating capabilities of logic inference and induction, enlightening confidence and independence, strengthening calculating abilities with an emphasis on its application and graph, furnishing a sound basis for future specialty.

Chinese Description 本课程希望在二学年中，能使学生对代数、三角、解析几何、微分及积分有充分的了解、培养逻辑推理、启发思考创造、强化计算演绎并注重应用与作图，以建立同学未来学习工程数学及相关专业课程之数学基础，充分达到学以致用的目的。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"