Two basic approaches to spanning over masonry walls are post-and-lintel construction and arch, vault, and dome construction.
Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.
- span [spæn] v. (桥、拱等)横跨
- post-and-lintel [pəust - ænd - ˈlintl] n. 连梁柱
- arch [ɑ:tʃ] n. 拱(连柱的)
- vault [vɔ:lt] n. 拱(不连柱的)
- dome [dəum] n. 穹隆(结构)：类似于穹隆(弓形、有拱的)或圆屋顶的结构
{ 5 comments… read them below or add one }
two basic apporachs of spanning…..
不是to 吧。
就是to，后接名词性成分。
建议粥粥把post-and-lintel分开画。
因为lintel表示上面那一横扛（即门楣[可以在韦氏里看到图]），而post是指支撑门楣的那两个竖着的棍儿。
[注：post的释义：A similar vertical support or structure, such as a support for a beam in the framework of a building.]
有个地方不太明白，上面的文本里是masonry walls “are” post-and-lintel construction ，下面图片里是masonry walls “are called” post-and-lintel construction ，应该是那个更准确呢？
arch、vault和dome的区别大致在于：arch是单独的一道拱门，vault是由多道arch交织而成的空间结构，而dome则是圆形的屋顶。