大喘气 发表于 2025-3-23 11:02:57
Clive Bloom to polarisation of the medium. There are several mechanisms responsible for this effect. The so called electronic polarisation is due to the displacements of the electron clouds centres. This contribution is extremely fast with resonant frequencies in the ultraviolet or visible range of the electro裂口 发表于 2025-3-23 17:56:45
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Clive Bloomifferentiates dynamic failure from quasi-static behavior is the presence of stress waves. These waves arise due to the applied load or due to the stresses released from a crack tip at fracture. Several phenomena are particularly relevant to dynamic failure, including:.1. Rapid crack propagation. The异端邪说下 发表于 2025-3-23 23:21:18
Clive Bloom crystal and electronic structures of the material. Hugoniot data are even now the most reliable (in situ and macroscopic) experimental information obtainable from shock compression research on solids. We can directly and precisely determine the pressure (stress)—density relation of condensed matterArrhythmia 发表于 2025-3-24 04:14:17
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Clive Bloomn terms of an essentially localized or excitonic picture of most of the Sm 5d-electrons, with a small number (≃.1 electrons per Sm) occupying the free-electron-like states at the bottom of a broad 5d-band. We review how such an essentially localized model for the 5d-electrons can lead to the observeFUSC 发表于 2025-3-24 15:39:24
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Clive Bloomn be recognized vertically, traced laterally, and correlated using approaches such as biostratigraphy or sequence stratigraphy. However, the term “resolution” can also denote . of the physical records (e.g., fossils, grains, diagenetic precipitates, etc.) contained within individual strata. Due to thankering 发表于 2025-3-25 00:01:37
Clive Bloomdefinitely been surpassed. High-resolution computed tomo graphy does indeed provide a better spatial resolution and can provide not only images of surfaces but also of deeper structures as well, such as muscles and fatty areas. Furthermore, it allows examination of the intra cranial contents and e