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Metallurgy
containing
镜 铜
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中国镜用铜锌合金
Chinese speculum metal
镜青铜
mirror bronze
(10 ~ 30Sn)
镜青铜
mirror alloy
镜面青铜
speculum alloy
镜面青铜
speculum metal
镜面青铜
speculum
(30~45Sn,余量 Cu)
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