穹窿
3.God said, "Let there be a vault between the waters, to separate water from water."
4.The Tectonic Characteristics and Mechanism of the Simingshan Dome,Central Hunan
6.The Features of Pengshan Dome Stratabound The Dominating Magma and Mine of The Pengshan Area, Dean County,Jiangxi
8.The churches (and they were numerous and splendid in the University, and they were graded there also in all the ages of architecture, from the round arches of Saint-Julian to the pointed arches of Saint-S関erin), the churches dominated the whole;
9.The Roman layer, which is the most ancient and deepest, is occupied by the round arch, which reappears, supported by the Greek column, in the modern and upper layer of the Renaissance.
10.One of the wedge-shaped stones forming the curved parts of an arch or a vaulted ceiling.

