node steel造句

例句与造句

1. On July 31, 2012, all corner parapet columns, also called " node steel ", were installed around the perimeter of the tower.
2. With temperatures easing by July 16, construction crews began installing parapet steel at the top of 1 WTC . On July 18, the first node steel was installed.
3. It's difficult to find node steel in a sentence. 用node steel造句挺难的