| 直线与投影面倾角和的最大最小值求法探讨 |
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| 引用本文： | 李西琴,李蓉. 直线与投影面倾角和的最大最小值求法探讨[J]. 陕西理工学院学报(自然科学版), 1998, 0(2) |
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| 作者姓名： | 李西琴 李蓉 |
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| 作者单位： | 西北工业大学制图教研室 |
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| 摘 要： | 讨论直线与三个投影面倾角和的最大值与最小值的求法，及三个角之间的相互关系，求出了三倾角和的最大值与最小值，并简要介绍了“直线的空间角”的概念，及其在实际中的应用。
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| 关 键 词： | 倾角；最大值；最小值；求法 |
Method of Seeking the Maximum and Minimum Inclination Sum of a Straight Line to Projection Surface |
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| Li Xiqin Li Rong. Method of Seeking the Maximum and Minimum Inclination Sum of a Straight Line to Projection Surface[J]. Journal of Shananxi University of Technology(Natural Science Edition), 1998, 0(2) |
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| Authors: | Li Xiqin Li Rong |
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| Affiliation: | Dept. of Machinery of Northwestern Polytechnical University |
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| Abstract: | Method of seeking the maximum and minimum of the inclinations'sum of a straight line to the three projection surface and relations between the three in clination are discussed detailedly in this article. And the conception of "Space angle of the straight line" and its application in pratice is introduced consisely. |
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| Keywords: | Inclination Maximum Minimum Method |
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