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backed stamper |
复制 模 : 34 phrases in 13 subjects |
Agriculture | 4 |
Aviation | 4 |
Bridge construction | 1 |
Chemistry | 1 |
Electronics | 5 |
General | 2 |
Genetics | 1 |
Metallurgy | 1 |
Multimedia | 1 |
Plastics | 2 |
Project management | 1 |
Technology | 9 |
Textile industry | 2 |