Bell was referring to an internal tube carrying air that can affect the aerodynamics of the rear wing and provide extra speed on the two long straights on the Sakhir track.
Bell 指的是赛车内部一根能够传递空气的导管，它能够影响尾翼的空气动力情况从而在Sakhir赛道的两条大直道上提供额外的速度。
Intersecting joint has become the major one in steel tube structure, for its advantages in load-carrying capacity, steel-saving, simple construction, legerity, elegance and so on.
而相贯连接钢管结构更以其受力性能好、节约钢材、施工简单、轻巧优美等优点成为目前钢管结构中最主要的结构形式之一。
To study the performance of Spouted Bed with Rotating Draft Tube (RDTSB), the rapeseeds were taken as raw material for carrying out the fluid dynamics experiment.
为研究“新型旋转导向管喷动床”的性能，采用油菜籽为原料，进行了流体动力学试验。
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