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铸造青铜
met. cast bronze
tech. casting bronze
PN 铸造青铜
met. P.N. bronze (3〜4Ni, 11.5~13Sn,0.05〜0.3P,余量 Cu)
铸造青铜
: 10 phrases in 4 subjects
Electric machinery1
General2
Metallurgy6
Technology1