| 单词 | semi-rigid theory |
| 释义 | > as lemmassemi-rigid theory b. gen. Somewhat rigid; having a certain amount of rigidity; semi-rigid theory (see quot. 1959). ΘΚΠ the world > matter > constitution of matter > hardness > types of hardness > [adjective] > stiff or rigid > somewhat semi-rigid1929 1929 Rep. & Mem. Aeronaut. Res. Comm. No. 1155. 19 (heading) Specification of a simple type of semi-rigid wing. 1937 Jrnl. Royal Aeronaut. Soc. 41 723 It was..possible to deduce from the semi-rigid theory design recommendations. 1946 Nature 30 Nov. 798/2 Rigid frames of triangular and square shapes, and semi-rigid frames. 1959 J. L. Nayler Dict. Aeronaut. Engin. 234 Semi-rigid theory, an approximate theory of elastic structure in which the theoretical infinite number of degrees of freedom is represented by a finite number, each being associated with an invariable mode. 1963 C. R. Cowell et al. Inlays, Crowns, & Bridges xi. 118 The retainer which is united to a pontic by a semi-rigid joint is called the ‘minor’ retainer. < as lemmas |
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