1.【建】楔形拱石
1.a wedge-shaped brick or stone used to form the curved parts of an arch or vault
1.In the light of the voussoir beam theory, the broken upper strata would be able to form a stable structure to support the loads.
根据砌体梁理论，上覆岩层破断以后仍可以形成能够承受载荷的稳定岩体结构，因此老顶通常以给定变形的方式作用于直接顶。
2.Between each block voussoir iron connected by bite.
各块拱石之间由咬铁相连接。
3.The Influence of Heat Treatment Process on the Service Life of Voussoir Die
热处理工艺对楔块模具使用寿命的影响