verdict 发表于 2025-3-28 15:50:14
Book 2017 mechanical, electromechanical and acoustical behavior of the metamaterials, which are founded upon mechanisms existing on micro-level in interaction of elementary structures of the material. The empiric observations on the phenomenological level are used to test the created models..The book provide敲诈 发表于 2025-3-28 19:23:47
1869-8433 methods and models using the theory of wave propagation, non.This volume deals with topical problems concerning technology and design in construction of modern metamaterials. The authors construct the models of mechanical, electromechanical and acoustical behavior of the metamaterials, which are fouRecessive 发表于 2025-3-28 23:22:55
Identification of Arrays of Cracks in the Elastic Medium by the Ultrasonic Scanning,es measured in the echo method for the full circular interval of the scanning angle. The diffraction of the elastic waves is studied in the scalar approximation. The proposed numerical algorithm is tested on some examples with clusters of cracks whose position and geometry are known a priori.Inscrutable 发表于 2025-3-29 04:20:24
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Short-Wave Diffraction of Elastic Waves by Voids in an Elastic Medium with Double Reflections and Tdiffraction integrals by means of multidimensional stationary-phase method. The novel approach allows us to obtain the leading asymptotic term of the diffracted displacement field as a closed-form expression in the cases of single and double reflections, which corresponds to the geometrical theory of diffraction (GTD).顶点 发表于 2025-3-29 17:20:30
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y they have to reduce one of these aspects. There are several ways to accomplish growth or reduction. A smooth way may consist of outsourcing parts of one’s non-core business processes to specialized parties in the market. A variety of outsourcing models have been developed (). Outsourcing can raFermentation 发表于 2025-3-30 04:10:52
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