FRET 发表于 2025-3-25 04:47:24
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Thermal quantum corrections to (Anti) de Sitter geometry,ress tensor are exactly solved. In this theory quantum field fluctuations are concentrated near two spheres of the de Sitter radius, propagating as light wave fronts. The analysis, performed for flat expanding universe, shows exponential damping of the back-reaction effects far from these sphericalmaroon 发表于 2025-3-25 18:53:36
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http://reply.papertrans.cn/19/1889/188864/188864_29.png厚颜 发表于 2025-3-26 18:50:15
Package-Handling Conveyors,Package-handling conveyors are either gravity type, roller (nonpowered); belt drive, roller; chain driven, roller; belt; or slat. Belt conveyors in general are covered in section 2. Drives are covered in section 9.