APPLICATION OF OPTIMUM FREQUENCY MATCHING METHOD TO SEPARATE DISTURBANCE NOISES FROM USEFUL SONIC SIGNALS IN STRATA EXPLORATION BY MEANS OF SONIC DEVICE是什么意思_APPLICATION OF OPTIMUM FREQUENCY MATCHING METHOD TO SEPARATE DISTURBANCE NOISES FROM USEFUL SONIC SIGNALS IN STRATA EXPLORATION BY MEANS OF SONIC DEVICE在线翻译_英语_读音_用法_例句