With same material and technics, bond strength of parallel lay-up is higher than upright lay-up.

材料和工艺相同时，顺纹组坯时的胶合强度高于垂直纹理组坯时的胶合强度。

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Walls from the soil to lay a solid foundation of internal and external all brick, masonry walls up to Des on the top, can be two parallel carriage.

城墙内部由泥土夯实，外部全部砖砌，城墙上以砖石辅就，上面可以并行两辆马车。

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