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圆 柱头 : 57 phrases in 12 subjects |
Agriculture | 1 |
Architecture | 2 |
Automobiles | 15 |
Aviation | 3 |
Compressors | 2 |
Engineering geology | 2 |
Medical | 1 |
Metallurgy | 3 |
Plastic surgery | 1 |
Plastics | 2 |
Technology | 24 |
Wind Energy | 1 |