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Location Nondestructive Testing of Knot of Larch Lumber with Vibration Modal Analysis Application Prospect on Applying Nondestructive Testing Technology in Wood Property Breeding of Larix kaempferi Research and Development on 2D Imaging Technology of the Decay in Trees and Logs Preliminary Study on the Melon-Shaped Column Structure in the Grand Hall of Ningbo Baoguo Temple Effects of Sensor Quantity and Planar Distribution on Testing Results of Log Defects Based on Stress Wave Elastic Wave Tomography in Standing Tree Decay Detection Construction of Stress Wave Time Isolines on Log Cross Section and Analysis of Its Effect Factors Applications of Wavelet Analysis in the Nondestructive Test of Medium Density Fiberboard Two Dimensional Image Construction of Ultrasonic Wave for