| 单词 | roof principal |
| 释义 | > as lemmasroof principal 6. Building. A main rafter supporting purlins, which support the common rafters (also roof principal). Also: a main girder. Cf. sense A. 9 . ΘΚΠ society > inhabiting and dwelling > inhabited place > a building > parts of building > framework of building > [noun] > roof-beam > rafter > principal couple1364 principal1445 lever1481 coupling1577 chevron1580 blade1855 1445 in J. H. Fisher et al. Anthol. Chancery Eng. (1984) 298 A new Rofe for ye same hous contenyng vj bemes vj wyndbemez vj principals. 1579 in R. Willis & J. W. Clark Archit. Hist. Univ. Cambr. (1886) I. 310 Braces to the principals eche of them xij foote longe. 1624 A. Wotton Runne from Rome 4 To trie how every tenant and mortuis is fitted each to other, what principals are too weake, which peeces are too long. 1777 T. Campbell Philos. Surv. S. Ireland xvi. 146 The remainder they lay parallel to the principals. 1863 Times 16 June 8/6 None of the roof-principals..were ever planed, they were put up rough from the saw. 1898 Westm. Gaz. 25 Mar. 7/2 Four massive iron principals (or girders) of a building in course of erection..fell yesterday afternoon. 1932 T. Corkhill Conc. Building Encycl. 146 Open roof, one in which the principals are on view. No ceiling. 1976 S. G. E. Lythe Econ. Scotl. 1550–1625 v. 144 Interiors were full of wood..for roof principals were left exposed in unashamed strength, and ceilings and walls were often lined with fir boards. < as lemmas |
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