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THE STUDY OF ULTRASONIC PULSE-ECHO SUBWAVELENGTH

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Page 1: THE STUDY OF ULTRASONIC PULSE-ECHO SUBWAVELENGTH

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Page 84: THE STUDY OF ULTRASONIC PULSE-ECHO SUBWAVELENGTH

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Page 85: THE STUDY OF ULTRASONIC PULSE-ECHO SUBWAVELENGTH

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Page 86: THE STUDY OF ULTRASONIC PULSE-ECHO SUBWAVELENGTH

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