orthoptic curve
... orthoptic circle 切距圆 orthoptic curve 切距曲线 orthoptic 切距的 ...
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等切距曲线 tractrix ; [数] equitangential curve
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介绍暗挖隧道曲线导向测量方法——弦线支距法和切弦线支距法的原理及应用。
This paper introduces the theory and its application of the curvilinear guided survey methods in concealed excavation of tunnels, such as chord offset method and tangent offset method.
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