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United States Standard Gage; United States Standard Gauge | |||
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United States Standard Gauge | |||
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United States Standard Gage | |||
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United States Gauge |
美国标准 规: 22 phrases in 10 subjects |
Architecture | 1 |
Aviation | 4 |
Business | 1 |
Economy | 6 |
Electric machinery | 1 |
Electronics | 1 |
Engineering geology | 1 |
General | 3 |
Metallurgy | 1 |
Technology | 3 |