BIBLE
发表于 2025-3-28 14:45:18
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LATHE
发表于 2025-3-28 19:12:04
The Use and Meaning of Gold in Ancient Peru,l present the history of the gold used to create objects belonging to rulers that were deposited in funerary and architectural contexts, from the oldest piece fabricated in the Andean word to the use and meaning that the ancient inhabitants gave to this noble metal.
不感兴趣
发表于 2025-3-28 23:42:04
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兽群
发表于 2025-3-29 03:49:11
Antique Metal Welding and Reparation,ds, were, in many cases, joined with rivets. Another important technique was the forging union, which was one of the first and accepted to join materials in ancient times, marking a path in those times when welding as we know it today had not yet been developed.
返老还童
发表于 2025-3-29 07:46:39
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不能约
发表于 2025-3-29 14:11:50
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GOAD
发表于 2025-3-29 18:31:41
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整理
发表于 2025-3-29 23:13:09
Ancient Lead, Mercury, and Tin,gold, silver and copper, one was used for tools and weaponry, iron, while the last three, lead, mercury and tin, were left for common uses due to the relative ease of reducing them from their ores. Lead, which is ductile and malleable, was used to produce ornamental and household goods, and in the m
流行
发表于 2025-3-30 01:03:49
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dictator
发表于 2025-3-30 04:08:19
Ancient Ferrous Metallurgy: Historical and Social Perspective,s a great influence in economics and society for a long time. It has been worked as a requirement in both agriculture and war. Ferrous alloys have the ability to adapt to changing requirements all over the world. For a long time, their extensive use has been well documented, contributing to improvin