As a method of spanning space, the arch can support greater weight than a horizontal beam.
As a method of spanning space请问这个是插入语吗?还是方式状语?
麻烦帮我解释下than在句子中的用法,它后面的a horizontal beam.
是做主语还是宾语呢?
It works in compression to divert the weight above it out to the sides, where the weight is borne by the vertical elements on either side of the arch.
Where引导的是地点状语从句对吗?请问by the vertical elements on either side of the arch是什么成分?
求高手解答