Methods of reading 读图的方法 1.Shape analysis method.形体分析法 The general procedure of reading is as follows:first read the primary component,then read the other components;first read easy components,then read difficult components;first read the overall shape for each component,then read shape details. 读图一般顺序：先看主要部分，后看次要部分；先看容易确定的部分，后 看难于确定的部分；先看某一组成部分的整体形状，后看其细节部分形状。 (1)Partition of drawing elements.分线框； (2)Comparison of drawing elements.对线框； (3)Understanding the shape from the drawing elements.看线框识形体， (4)Overall imagination.综合想象。 请点击鼠标左键显示后面内容
6 The general procedure of reading is as follows: first read the primary component, then read the other components; first read easy components, then read difficult components; first read the overall shape for each component, then read shape details. 读图一般顺序：先看主要部分,后看次要部分；先看容易确定的部分,后 看难于确定的部分；先看某一组成部分的整体形状,后看其细节部分形状。 1. Shape analysis method. 形体分析法 Methods of reading 读图的方法 (2)Comparison of drawing elements. 对线框； (1)Partition of drawing elements. 分线框； (3)Understanding the shape from the drawing elements.看线框识形体； 请点击鼠标左键显示后面内容 (4)Overall imagination. 综合想象
Methods of reading 读图的方法 2.Analysis of lines and planes.线面分析法 We partition the composite solid into individual boundary surfaces. We analyze and identify the space shape of the individual surfaces and their relative locations following the principles of projection.We can further determine intersection curves/lines and their relative locations and finally imagine the overall space shape of the composite solid 把组合体分成若干个面，根据其投影特点确定其空间形状和相对位置， 并判别交线的空间形状和相对位置，从而想象出组合体的形状。 Example 4.Complete the left view by adding the missing detail. 补画组合体左视图 Example 5.Draw the left view of the subtraction composite solid. 画切割式组合体左视图 Example 6.Draw the left view of the hybrid construction solid 画综合式组合体左视图
7 Example 6. Draw the left view of the hybrid construction solid. 画综合式组合体左视图 Methods of reading 读图的方法 We partition the composite solid into individual boundary surfaces. We analyze and identify the space shape of the individual surfaces and their relative locations following the principles of projection. We can further determine intersection curves/lines and their relative locations and finally imagine the overall space shape of the composite solid. 把组合体分成若干个面，根据其投影特点确定其空间形状和相对位置, 并判别交线的空间形状和相对位置,从而想象出组合体的形状。 Example 4. Complete the left view by adding the missing detail. 补画组合体左视图 Example 5. Draw the left view of the subtraction composite solid. 画切割式组合体左视图 2. Analysis of lines and planes. 线面分析法
Exercises 练习题 1. Draw the front view of the composite solid. 已知俯视图，想象物体形象，画出主视图。 2.Draw the plan view of the composite solid. 已知主视图，想象物体形象，画出俯视图。 3.Draw the plan view of the composite solid. 已知主视图，想象物体形象，画出俯视图。 4.Draw the left view of the composite solid. 已知主、俯视图，想象物体形象，画出左视图。 5.Select the left view which is correctly drawn. 根据所给主、俯视图，找出正确的左视图。 6.Analyze the component using shape method. 运用形体分析法，读懂组合体，完成以下作业。 请点击题日显示其内容
8 Exercises 练 习 题 1. Draw the front view of the composite solid. 已知俯视图，想象物体形象，画出主视图。 5. Select the left view which is correctly drawn. 根据所给主、俯视图，找出正确的左视图。 3. Draw the plan view of the composite solid. 已知主视图，想象物体形象，画出俯视图。 4. Draw the left view of the composite solid. 已知主、俯视图，想象物体形象，画出左视图。 请点击题目显示其内容 6. Analyze the component using shape method. 运用形体分析法，读懂组合体，完成以下作业。 2. Draw the plan view of the composite solid. 已知主视图，想象物体形象，画出俯视图
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10 4. Complete the left view by adding the missing detail. 补全切割式组合体的左视图。 Steps作图步骤： (1)Analyze the component. 先分析各线框，再 确定其结构形状。 (2)Draw the missing detail. 确定其在左视图的位 置并补全所缺图线。 前上方切三棱柱 前后左右切半圆锥 解答 动画 动画 请点击量标左键显示后面内容 返回
10 请点击鼠标左键显示后面内容 4.Complete the left view by adding the missing detail. 补全切割式组合体的左视图。 Steps 作图步骤： (1) Analyze the component. 先分析各线框,再 确定其结构形状。 (2) Draw the missing detail. 确定其在左视图的位 置并补全所缺图线。 前上方切三棱柱 前后左右切半圆锥