“拱顶”怎么读

这座天主教堂的拱顶非常高.The vault of this cathedral is very high.那座教堂的屋顶是拱顶.The church has a vault.拱顶处剪力的影响线可按类似方式得到.The influence line for shear at the crown can be obtained in a similar manner....

“拱顶”的英语可以翻译为：[建] vault，apex of arch，bow of head，fornication ...