| “四心法”椭圆画法的通用公式 |
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| 引用本文： | 胥开理.“四心法”椭圆画法的通用公式[J].青岛理工大学学报,1989(3). |
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| 作者姓名： | 胥开理 |
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| 作者单位： | 青岛市科协 青岛工程学院校友 |
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| 摘 要： | 本文对“四心法”椭圆提出了新画法。文中通过分析图形中的边角关系,推导出确定椭圆大、小圆弧半径长度的通用计算公式。应用公式计算的数值,以“量取法”绘制椭圆,例举了画法。
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| 关 键 词： | “四心法”椭圆 辅助作图法 量取法 |
A GENERAL-PURPOSE FORMULA OF TECHNIQUE OF DRAWING "FOUR-POINT-METHOD" ELLIPSE |
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| Xu Kaili,Qingdao Association for Science and Technology.A GENERAL-PURPOSE FORMULA OF TECHNIQUE OF DRAWING "FOUR-POINT-METHOD" ELLIPSE[J].Journal of Qingdao Technological University,1989(3). |
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| Authors: | Xu Kaili Qingdao Association for Science and Technology |
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| Abstract: | A new technique of drawing "four-point-method" ellipse is put forward in this paper. The author analyzes the relationship between side and angle in a diagram to deduce a new general-purpose formula which can determine the length of arc radius and the size of an ellipse. The datums caculated from the formula are used to draw the ellipse by "method of measuring". |
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| Keywords: | : "four-poing-method" assistant technique of drawing method of measuring |
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