| 单词 | dragonbeam |
| 释义 | > as lemmasdragon-beam camber-beam: one with its upper surface curving downward on both sides from the middle. collar-beam: a beam used to join together roof-rafters above the base of the roof, acting either as a tie or a strut. dragon-beam: a short piece of timber lying diagonally with the wall plates at the angles of the roof, for receiving the heel of the hip rafter. hammer-beam: a beam acting as a tie, but not extending across the whole span of the roof. tie-beam: the beam which connects the bottom of a pair of principal rafters, and prevents them from thrusting out the walls.extracted from beamn.1dragon-beam dragon-beam n. ‘a short beam lying diagonally with the wall-plates at the angles of the roof for receiving the heel or foot of the hip-rafter’ (Gwilt). ΚΠ 1679 J. Moxon Mech. Exercises I. ix. Explan. Terms 166 Dragon beams, are two strong Braces or Struts..meeting in an angle upon the shoulder of the King peece. < as lemmas |
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