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| 成行层缝 | |||
| 成行缝; 成层缝 | |||
| 共心缝 (与拱同心但把两层拱分开); 分层铺砌 (毛石砌墙); 成行砖缝; 层缝 (砌体) | |||
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coursing joint : 1 phrase in 1 subject |
| Architecture | 1 |
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