1. a narrow window having a lancet arch and without tracery. 没有窗饰只有一个尖拱顶的窄窗户。
2. a narrow window having a lancet arch and without tracery. 没有窗饰只有一个尖拱顶的窄窗户。
3. The arch axis of arciform aqueducts formed by the continuum topology optimization method was compared with the circular arch axis and the parabolic arch axis of the same span. 结果表明，由结构拓扑优化方法生成的拱轴线，自重作用下的弯矩值以及相同均布荷载作用下的应力值都比相同矢跨值的圆弧拱轴线和二次抛物线拱轴线小。
4. The arch axis of arciform aqueducts formed by the continuum topology optimization method was compared with the circular arch axis and the parabolic arch axis of the same span. 结果表明，由结构拓扑优化方法生成的拱轴线，自重作用下的弯矩值以及相同均布荷载作用下的应力值都比相同矢跨值的圆弧拱轴线和二次抛物线拱轴线小。
5. In order to express the stress characteristics of the multi-arch dam, stress of the Pingqiao multi-arch dam are analyzed by using independent arch method and ANSYS in this paper. 本文根据连拱坝的受力特点，利用了纯拱法和有限单元法（ANSYS）分别对平桥砌石连拱坝进行了应力稳定分析。
