查询词典 descriptive geometry solution

A variety of descriptive styles for ordinary geometry objects are to be mentioned and general ideas and methods of three dimensional visualization technology applied in spatial data description will also be explained.

三维实体的表示方法，将直接关系到GIS的数据结构、数据管理等问题。

Most schools require at least one course in calculus and descriptive geometry before the introduction of engineering statics .

很多学校要求学生在学习《工程静力学概论》之前最起码先修过《微积分》或《画法几何》中的一门。

How to solving comprehensive problems in descriptive geometry is always a difficult teaching point, because good abilities of graphic thinking and space logical thinking are required for the students.

画法几何综合问题是教学的难点，要求学生具有较强的空间想象能力和空间逻辑思维能力。

One of its founders was Gaspard Monge (1746-1818), inventor of descriptive geometry(which incidentally was kept as a military secret by the French government for 30 years because of its value in planning fortifications).

其中，其创始人是加斯帕德蒙赫( 1746-1818 )发明者画法几何(顺便被当作一项军事秘密的法国政府对30年来由于它的价值在规划的工事)。

The present teaching situations of descriptive geometry and architectural drawing and challenges it confronts are briefly introduced,so that the necessity to carry out curriculum reform is discussed.

简要介绍了《画法几何及建筑制图》课程的现状和面临的挑战，论述了课程改革的必要性，并从课程内容、教学方法及教学手段、考核方式等方面论述了《画法几何及建筑制图》课程可行的教学改革方案，以提高教学质量。

Using planar graph to express the three-dimensional objects, or a projection map to express the three-dimensional objects, must be consistent with the projection theory of descriptive geometry.

用平面图形来表达三维立体实物，或用一个投影图来表达三维立体实物，必须符合画法几何的投影理论要求。

The first section is descriptive geometry, including basic knowledge of cartography and projection, projections of point, beeline, plane and their interrelations, projection transformation, curve, curving plane, the projection of curving plane solids, line of section, line of intersection, section and segmentation, elevation projection, dimetric projection.

第一部分为画法几何：其中有制图基本知识，投影的基本知识，点、直线、平面的投影及它们之间的关系，投影变换，曲线、曲面及曲面立体的投影，截交线与相贯线，剖面图与断面图，标高投影，轴测投影等。

Main Curriculums: Higher Mathematics, Engineering Mathematics, College Physics, English, Descriptive Geometry and Building Cartography, Program Design and Arithmetic, Introduction to Java, Network Database, Numerical Analysis, Tensor Analysis, Specialty English, Document Retrieval and Utilization, Introduction to Mechanics, Theoretical Mechanics,Mechanics of Materials,Structural Mechanics,Computational Mechanics and Engineering Software, Theory of Plate and Shell, Theory of Elasticity, Composite Mechanics, Advanced Structural Mechanics,Plastic Mechanics of Structural Engineering, Fluid Mechanics, Experimental Mechanics, Vibration Theory, Soil Mechanics and Foundation, Steel Structures, Concrete Structures, Engineering Construction and Engineering Estimate, Engineering Signal Analysis and Processing, CAD of Structure, Design of Structural Optimization, Modern Testing Technologies.

专业课：高等数学、工程数学、普通物理、英语、政治、画法几何及建筑制图、程序设计与算法语言、Java基础、网络数据库、数值分析、张量分析、专业英语、科技文献检索、力学概论、理论力学、材料力学、结构力学、计算力学与工程软件、板壳理论、弹性力学、复合材料力学、高等结构力学、结构工程塑性力学、流体力学、实验力学、振动理论、土力学与地基基础、钢结构、混凝土结构、工程施工与概预算、工程信号分析与处理、结构CAD、结构优化设计、现代测试技术等。

Major producers of microwave, cable TV signal descrambling devices, cable descrambling devices addressable scrambling system cluster solution additive group, group plus a single solution,, CATV cable IC card authorization group scrambling system plus a single solution, single-plus single - solution, single-plus group solutions, multi-phase sequence control.

主要生产微波、有线电视信号解扰器，有线电视解扰器可寻址加扰系统群加群解，群加单解，，CATV有线电视IC卡授权加扰系统群加单解，单加单解，单加群解，多相位序列控制。

The genetic inactivation of eggs is the first key stage of androgenesis in fish. In order to observe the effect of UV irradiation for the inactivation of female nucleus of zebrafish the eggs were irradiated by UV with solution-free, pure water, Ringer's solution and Cortland solution. The results showed that abnormal fry were obtained in all groups and haploids were validated. But irradiation with solution was confirmed it could not inactive fully female nucleus and the fertilization rate of the eggs irradiated with pure water was very low.

雌核灭活是雄核发育的第一个关键步骤，为研究紫外线对斑马鱼卵的雌核灭活效果，将斑马鱼的卵采用干法或置于纯水、Ringer氏溶液和Cortland鱼用生理盐水进行紫外线照射，结果表明，各种方法中均得到畸形鱼苗，并经染色体检查大多为单倍体；四种方法中在Cortland鱼用生理盐水中灭活效果最好，120 mJ/cm2紫外线可以使雌核完全灭活；干法处理不能达到雌核完全灭活的目的，在纯水中灭活后的卵子受精率较低。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。