魅力 发表于 2025-3-28 15:31:28
http://reply.papertrans.cn/67/6673/667222/667222_41.png表状态 发表于 2025-3-28 19:05:05
http://reply.papertrans.cn/67/6673/667222/667222_42.pngLeisureliness 发表于 2025-3-29 00:37:11
Nondestructive Density Measurements in Powder Metallurgy and Ceramicsm metallic or ceramic powders. The mathematical background for the assessment of this method and for evaluations of the accuracy of measurement is presented. The equipment for the practical application of density measurements in industry has been developed. Hardware and software of this computerized比赛用背带 发表于 2025-3-29 03:23:51
http://reply.papertrans.cn/67/6673/667222/667222_44.png不连贯 发表于 2025-3-29 07:26:25
Graphite-magnesium Elastic Constants: Composite and Fiberof 70-volume-percent continuous uniaxial graphite fibers in a magnesium matrix. By ultrasonic-velocity methods, we measured the composite’s complete orthotropic-symmetry (nine-independent-component) elastic-constant tensor: C.. For a model, we used a wave-scattering method in the long-wavelength lim玩忽职守 发表于 2025-3-29 13:36:04
http://reply.papertrans.cn/67/6673/667222/667222_46.pngosteocytes 发表于 2025-3-29 18:08:24
http://reply.papertrans.cn/67/6673/667222/667222_47.png修改 发表于 2025-3-29 21:25:09
Recognition of Fracture Modes and Behaviour of Composites by Acoustic Emissionerials. Recognition of the individual mode and location by on-line measurement is very important for material evaluation and design as well as. proof test. AE technology is being used for the purposes as a powerful tool. However, usual amplitude distribution analysis has a limitation because of the不可思议 发表于 2025-3-30 02:22:28
http://reply.papertrans.cn/67/6673/667222/667222_49.pngformula 发表于 2025-3-30 06:37:14
Ultrasonic Velocity Measurements in Porous Materialsials are rocks, sediments and filters. The materials used in this study are both metallic and non-metallic structures with particle sizes ranging from 15 μ to 700 μ and porosity concentration up to 40%. Wave propagation in these two phase materials has been studied by Biot