rectangular tube
[英]rekˈtæŋɡjulə tju:b
[美]rɛkˈtæŋɡjəlɚ tub
方形管
[例句]The basic beam consists of a rectangular f.r.p.tube with an arch-shaped conduit formed inside it.
这种基础梁由矩形f.r.p.管构成,矩形框架内是拱形管道.