  In this post, a new variable y($\mu=y\omega$) is added to extend the results
of the above post. We derive a very compact resonance formulation. When y is a
certain limit, the effective potential of the equation exists at the pole, and
the potential well appears outside the event horizon, when ${e}^{-4\alpha \Phi
/(n-1)}\sqrt{\alpha} Q \ll r_{+}\ll 1 / (\frac{4}{n-1}y) $, so charged dilator
black hole is superradiatively unstable at this time.
