学习目标 (Objectives):
本讲学完,应达到:
1. 了解本课程的性质、基本任务,及其对自身职业发展的重要性;
2. 理解投影基本知识,明确投影概念、术语,基本几何要素-点、线、面的投影特性;
3. 认识常用工程图形种类、常用标准、计算机设计与绘图(CADD)的必要性和重要性;
4. 熟练掌握常用绘图工具的使用;
5. 深刻理解线形含义、简单图形的绘制、尺寸标注方法等。
Objectives:
After studying this chapter, you will be able to:
1.Know the course characteristics, tasks, and significance for your personal development;
2.Understand basic knowledge and define common termsabout projection of point, line, and plane;
3.Know commonly-used engineering drawings, standards, and CADD's importance;
4.Use traditional drawing tools, like straight edge, pencils, and compass etc.;
5.Understand line type, draw simple figures, and give dimensions etc.
学习任务(Specific tasks):
1.本讲对应PPT可在“资料”中下载 “1 introduction 春2020 手机看”(无连接,层次感不强,但方便手机端)or “1 introduction 春2020 含链接及动画” 适合电脑端);
2.每周三下午1:30开始准备上课签到,签到时间大约10分钟截止;
3.按照视频顺序逐一看 “1 introduction”中的全部教学章节中的视频(可以提前看),期间教师会发布课上考试题,需在规定时间内答完,要求大家全程在线;
4.完成“作业”模块中的homework 1, 仔细阅读每道题的具体要求,认真答题并拍照上传指定的题目;
5.完成“考试”模块中的两个课后考试test1, test2;
6.发帖回复“讨论”中教师给出的问题,欢迎在“讨论”区提出任何自己不懂的问题;
7.注意在“通知”或“群聊”中老师发出的信息;
8.欢迎非课程学习内容相关问题在“群聊”中提出,表达自己的看法;
9. 阅读教材相应章节,大约对应1-7章,借助资料提高自我解决总结与解决问题的能力;
10.熟记常用专用词汇的中英文表达。
Specific tasks:
1.Download the first lecture PPT-"1 introduction 春2020 手机看" or "1 introduction 春2020 含链接及动画" from “资料”;
2.Be ready to sign in class at 1:30 o'clock every Wednesday afternoon, generally it lasts 10 mins;
3.Watch all videos in chapter 1 by order (you can browse earlier), during the self-taught learning process, some quizzes needed to answer in limited time will be popped up, so attendance is expected in every lecture;
4.Complete homework 1 carefully and upload the required question pictures;
5.Finish the after class test1 and test2;
6.Give your own idea about the questions shown in Discussion forum;
7.Pay attention to some messages delivered by instructor in Notice or Group chat;
8.Welcome to express your mind in Group chat, including some topics out of study;
9.Read the bilingual textbook from chapter 1 to chapter 7 to improve your ability of solving some problems by yourself.
10.Try to learn the glossaries by heart, that is very helpful for understanding the following lectures;
Lecture 1 :Glossary
1. Visualization 可视化
2. Projection principle/method 投影原理/方法
3. Projection 投影 projection center 投影中心 projector/projection line 投射线 projection plane 投影平面
4. CADD-computer aided drawing and design 计算机辅助绘图与设计
5. Central projection method 中心投影法
6. Parallel projection method 平行投影发
7. Orthographic/orthogonal projection 垂直/正投影
8. Oblique projection 斜投影
9. Quadrant/projection angle 象限/投影角
10. Multi-view drawing二维图
11. Axonometric drawing 轴测图
12. Cartographical drawing/contour map drawing 地图/等高线图
13. Perspective drawing 透视图
14. Three-view projection system 三视图投影体系
15. Space point 空间点
16. Perpendicular to 垂直于
17. Normal lines 投影面垂直线 H-normal铅垂线, V-normal正垂线, W-normal 侧垂线
18. Inclined lines 投影面平行线 horizontal line 水平线, frontal line 正平线, profile line 侧平线
19. Point view 点投影/投影积聚为一个点
20. Edge view 线投影/投影积聚为一条线
21. Foreshortened 缩短的
22. Frontal plane正平面, horizontal plane水平面, profile plane侧平面
23. H-normal plane铅垂面 V-normal plane 正垂面 W-normal plane侧垂面
24. Oblique plane 一般位置平面
25. Three principal views 基本视图-front view主视图 top view俯视图 left-side view左视图
26. Regular polygons 正多边形(any plane figure with at least 5 equal sides)
27. equilateral triangle等边三角形 isosceles triangle等腰三角形, right triangle直角三角形
28. triangle 三角形square正方形 rectangle 矩形 pentagon正五边形
29. hexagon 正六边形 heptagon正七边形 octagon正八边形
30. line type 线型
31. thick solid line/thick line/thick continous line 粗实线 thin solid line/thin line/thin continuous line 细实线
32. center line中心线 hidden line虚线
33. short-break line/break line波浪线 long-break line 长折线 phantom line 双点画线
34. dimension line 尺寸线 extension line尺寸界限 arrow head箭头 dimension figure/numeral 尺寸数字
35. diameter直径 radius半径 spherical diameter 球面直径
36. chamfer倒角 equally spaced 均布
37. counterbore hole沉头孔 countersink hole埋头孔
38. slope斜度 taper锥度
39. orientation 方位
40. symmetry 对称性/对称
教材(bilingual)

