To alleviate the problem of unsatisfactory target strength and scattering stability of an underwater corner reflector. a method to enhance the acoustic scattering characteristics using a vacuum cavity as an acoustic reflecting layer is proposed. According to the principle of acoustic impedance mismatch of a water-reflecting layer. a vacuum cavity corner reflector is designed to take a... https://www.animationbengal.com/?w=super-price-johnny-cash-at-folsom-prison-fashion-great-buy