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In engineering drawings,horizontal oblique axonometric projection of shade and shadow on spheric surfaces can be drawn only in special light ray directions and by approximate methods,causing great trouble.

工程图学中，用传统的作图方法求圆球及阴影的水平斜轴测投影，只能在特殊光线方向下，用近似方法绘制，且作图非常麻烦。

An improvement has been carried out on the generation method of 2D engineering drawing from 3D model in AutoCAD, and formed an intact methodology and skill of generating axonometric drawing and multi-planed orthogonal projection drawing from 3D model.

对AutoCAD中由三维模型生成二维工程图的方法进行了改进，形成由三维模型生成轴测图和多面正投影图的完整方法和技巧，这种方法所得到的轴测图和正投影图，可以对其更加方便地进行各种编辑，是一种适用的方

This paper presents the optical illusion of the ambiguity axonometric projection and the deformation of the stereogram, and use many courses knowledge to analyse the cause then get some important conclusions.

针对观看体视投影图出现体视合像变形、非单义性轴测投影图的视错觉，运用多学科的知识来分析原因，探讨消除对策，得到了一些重要的结论。

Based on axonometric projection and software platform of AutoCAD,through Visual Lisp programming,the animation of movements of crank block mechanism is realized with a user-friendly interface.

解析法需要大量的数据计算，需要编制程序才能进行。因此，实际工程中大多使用作图法进行设计。

Shade and shadow of spheric surface ; horizotal obligue axonometric projection ; light rays ; visibility

圆球的阴影；水平斜轴测投影；光线方向；可见性判别

Visualization of a axonometric projection conforms to the law of identity of imaginal thinking, If conforming to the law of identity, it have to conforms to the principle of similarity 、continuity and proximity.

轴测投影的直观遵循形象思维的同一律，而要遵循同一律，又必须遵循相似原则、连续原则、接近原则，符合三原则的图形看上去位于同一平面。

A measurement system control and data processing software is composed with 4 modules, namely, parameters setup module, sampling control module, data processing module, and 3D display module which can illustrate the 3D profile of the inside surface of barrels with normal axonometric projection and cabinet drawing.

该软件分为参数设置模块、采样控制模块、数据处理模块和三维表面显示模块，可实现采样过程的动态显示，并能以正等测和斜二等测两种投影方式向用户展示被测表面的三维形貌。

Make an cabinet axonometry projection of the composite solid.

画出组合体的斜二等轴测图。

Make an cabinet axonometry projection of the cube with a hole.

先画出轴测轴和前后表面圆心

When the axonometry projection plane is parallel to a coordinate axis, and the coefficient of axial deformation of two axes that parallel to the coordinate plane are equal, the cabinet axonometry is produced.

轴测投影面平行于一个坐标轴，且平行于坐标平面的那两个轴的轴向伸缩系数相等的斜轴测投影称为斜二等轴测图。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。