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铂铱合金
met. iridioplatinum; Platiniridium (30~75Ir,余量 Pt); platinum-iridio (5 ~ 30Ir,余量Pt)
tech. platinum iridio
铂-铱合金
met. hard platinum
铂铱合金: 4 phrases in 3 subjects
General2
Oil / petroleum1
Technology1