华北科技学院学报
華北科技學院學報
화북과기학원학보
JOURNAL OF NORTH CHINA INSTITUTE OF SCIENCE AND TECHNOLOGY
2014年
4期
45-48
,共4页
平面角%三射线定理%投影角
平麵角%三射線定理%投影角
평면각%삼사선정리%투영각
plane angle%three rays theorem%projection angle
空间两直线的平面角是工程实际中经常碰到的问题,在工程制图的教学中,未能给出解决任意平面角的图解问题。本文应用三射线定理,在投影角度一定的前提下,详细地分析任意平面角与其投影角之间的变化规律,以期强化工程制图的教学工作,深化空间角度在工程实际中的应用。
空間兩直線的平麵角是工程實際中經常踫到的問題,在工程製圖的教學中,未能給齣解決任意平麵角的圖解問題。本文應用三射線定理,在投影角度一定的前提下,詳細地分析任意平麵角與其投影角之間的變化規律,以期彊化工程製圖的教學工作,深化空間角度在工程實際中的應用。
공간량직선적평면각시공정실제중경상팽도적문제,재공정제도적교학중,미능급출해결임의평면각적도해문제。본문응용삼사선정리,재투영각도일정적전제하,상세지분석임의평면각여기투영각지간적변화규률,이기강화공정제도적교학공작,심화공간각도재공정실제중적응용。
The angle between the two lines in space is often encountered in engineering practice.The diagram of random plane angle is not given in the engineering drawing teaching.In this paper , under the premise of a certain projection angle , it is analyzed detailedly change regulation between space plane angle and its projec -tion by application of three rays theorem.The purpose is to strengthen the teaching of engineering drawing and deepen the application of plane angle in engineering.