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calculating disc; counting scale | |||
disk slide rule |
计算盘 : 41 phrases in 14 subjects |
Automobiles | 1 |
Business | 3 |
Commerce | 1 |
Economy | 2 |
Electronics | 12 |
General | 1 |
Information technology | 3 |
Multimedia | 1 |
Project management | 2 |
Securities | 1 |
Space | 2 |
Technology | 8 |
Telecommunications | 3 |
Textile industry | 1 |