扩压器的入流速度可以是亚音速的,也可以是超音速 的。然而,对于入流是亚音速的还是超音速的,扩压 器的形状截然不同( However, the shape of the diffuser is drastically different, depending on whether the incoming flow is subsonic or supersonic) M<1 亚音速扩压器扩压器的入流速度可以是亚音速的，也可以是超音速 的。然而，对于入流是亚音速的还是超音速的，扩压 器的形状截然不同 (However, the shape of the diffuser is drastically different, depending on whether the incoming flow is subsonic or supersonic) . 亚音速扩压器