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穿孔卡系统
math. punched card system
穿孔卡〔片〕系统
comp. punch card system
穿孔〔资料〕卡系统
earth.sc. punch card system
穿孔卡片系统
met. punch-card system
穿孔卡系统: 14 phrases in 6 subjects
Aviation1
Business1
Electronics2
Mathematics2
Metallurgy4
Technology4

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