Defect Evaluation of Standing Trees by Ultrasonic Tomography Technique
碩士 === 國立臺灣大學 === 森林環境暨資源學研究所 === 94 === The purpose of this study was to investigate decayed standing trees and artificial holes in the cross section of Cryptomeria japonica by using ultrasonic tomography technique. The ultrasonic instrument Sylvatest-Duo and the trunk section of Cryptomeria japoni...
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/00196100757511650323 |