外墙为精雕细琢的填充板,没有玻璃开口。
These areas are enclosed with glass Windows, and sometimes with a single masonry infill at the back.这些地方都是以玻璃窗户围合,并且有时在后面加单砌填料。
Sodium infill valves are not a new concept, but in the past they have been extremely costly to build.中空充钠气门并不是一个全新的概念,但是过去他们造价高昂。