讽刺滑稽戏剧
发表于 2025-4-1 01:56:13
Air-Coupled Ultrasonic System for Detecting Delaminations and Cracks in Paintings on Wooden Panelsminations. The system enables measurements to be easily made of highly anisotropic and inhomogeneous materials such as wood..The ultrasonic system used in this study has a superior signal-to noise ratio because it uses efficient transducers, low noise pre-amplifiers, and a phase-sensitive superheter
流浪者
发表于 2025-4-1 09:58:55
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GLEAN
发表于 2025-4-1 12:04:32
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传授知识
发表于 2025-4-1 15:13:26
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