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。
2
To make an inquiry into the internal and external mixing aerodynamics, research was made on this kind of mixer-ejector system by a series of experiments and computations.