| 单词 |
king-post |
| 释义 |
ˈking-post
1. Carpentry.
a. An upright post in the centre of a roof-truss, extending from the ridge to the tie-beam.
1776G. Semple Building in Water 115 The King-post, h. may be the same. 1817B. Hall Voy. Loo Choo (1820) 54 The roof was well constructed, the rafters being mortised into the ends of the horizontal beams, and braced to the middle by a perpendicular beam or king-post. 1891A. White Tries at Truth iii. 15 In building a porch, the king⁓post is the beam on which the whole structure rests.
b. attrib., as king-post roof, king-post truss.
1845Ecclesiologist I. 149 Tie-beams, which sustain a low king-post roof. 1886E. S. Morse Japanese Homes i. 10 [He] fairly loathes a structure that has no king-post..truss.
2. On a ship (see quots.).
1927G. Bradford Gloss. Sea Terms 95/2 King post, a short derrick mast to support the smaller cargo booms. 1948R. de Kerchove Internat. Maritime Dict. 385/1 King post. 1. A short heavy mast which serves to support a boom. 2. The centerline pillars in a ship's hold. 1961F. H. Burgess Dict. Sailing 127 Kingpost, a vertical post, sometimes resembling a mast, erected near the hatches, to support and top a derrick boom. |
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