易受刺激 发表于 2025-3-25 04:55:35
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http://reply.papertrans.cn/32/3195/319429/319429_22.pngMammal 发表于 2025-3-25 12:39:15
Analysis and Reconstruction of a Platform with Ball Bearings in Roman Ships of Nemi Lakemi lake near Rome in 1930s. The investigation is focused in analysing the mechanical design of the remained ball bearings with a speculation on their manufacturing and in reconstructing a feasible solution of their use in a platform or guide to move heavy loads on the ship. Results are reported bothCongruous 发表于 2025-3-25 16:58:31
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http://reply.papertrans.cn/32/3195/319429/319429_25.pngexpunge 发表于 2025-3-26 01:09:06
Springer Nature Switzerland AG 2019巨头 发表于 2025-3-26 07:28:18
Explorations in the History and Heritage of Machines and Mechanisms978-3-030-03538-9Series ISSN 1875-3442 Series E-ISSN 1875-3426摇曳 发表于 2025-3-26 10:11:09
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