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罗马青铜铜90%,锡 10%
construct. Roman bronze
罗马青铜
met. Roman bronze (1:58 — 60Cu, 0~2Mn, 1Fe, 1.1 Al,余量 Sn;2:90Cu, 10Sn)
罗 马青铜
: 4 phrases in 3 subjects
Construction1
Metallurgy2
Technology1