单词 | transition curve |
释义 | > as lemmastransition curve transition curve n. (a) (in a graph) a curve representing the variation in one or more quantities during a period of transition between states; (b) a gently curved length of road or railway track used to connect a straight section with a more curved one, constructed so as to allow drivers to avoid having to suddenly accelerate or decelerate when passing from one to the other. ΚΠ 1889 London, Edinb., & Dublin Philos. Mag. 5th Ser. 27 127 The curious transition-curve..is specially worthy of note. 1890 Jrnl. Elisha Mitchell Sci. Soc. 7 105 The ideal transition curve for railroads..is one whose degree of curvature is zero at the point where it leaves the tangent. 2009 N. J. Garber & L. A. Hoel Traffic & Highway Engin. (ed. 4) xv. 783 The use of transition curves provides a vehicle path that gradually increases or decreases the radial force as the vehicle enters or leaves the circular curve. 2012 C. A. Burtis et al. Tietz Textbk. Clin. Chem. & Molecular Diagnostics (ed. 5) xvii. 416/2 Intramolecular conformational changes show up as continuous transition curves. < as lemmas |
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