| 单词 |
cocket-centre |
| 释义 |
cocket-centre Arch. A centre or centering used in building an arch, when head-room is required above the springing line, to allow passage through during the time of building.
1841S. C. Brees Gloss. of Civ. Eng. 52 Where head-room is left above the springing of the arches, such centres are termed cocket-centres. c1858A.P.S. Dict. of Archit. II. C. 58 Where a level tie-beam is omitted..such a centre is called a cocket centre. |

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