| 单词 |
catenary |
| 释义 |
catenary, n. and a.|kəˈtiːnərɪ|
[ad. L. catēnāri-us relating to a chain, f. catēna chain.]
A. n. Math. [mod.L. catenaria.] The curve formed by a chain or rope of uniform density hanging freely from two fixed points not in the same vertical line. The common catenary is the curve so formed by a chain of uniform thickness.
1788T. Jefferson Writ. (1859) II. 546 Every part of a catenary is in perfect equilibrium. 1798Hutton Course Math. (1828) II. 175 A heavy flexible cord or chain, left to adjust itself into a hanging catenary. 1856Ruskin Mod. Paint. IV. v. xvii. §12 One of the most beautifully gradated natural curves—called the catenary.
B. adj.
1. Math. catenary curve = catenary; see A.
1872Ruskin Eagle's Nest §139 The parabolas of ..waterfalls and fountains..the catenary curves of their falling festoons. 1887Hardy Woodlanders I. i. 6 A hook to which the reins were hitched..forming a catenary curve.
2. Relating to a catena or series.
1855I. Taylor Restor. Belief 221 By processes of catenary deduction. |
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