橋樑結構檢測新技術簡介（三）
橋樑基礎動態試驗
Bridge Substructure Evaluation Using Forced Vibration Response
敲擊回音法測定後拉預力套管
Impact-Echo System for Detection of Voids in Post-Tensioning Ducts
磁性方法檢測預力鋼腱
Magnetic-Based Techniques for Prestressing Steel in Prestressed Concrete