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symmetrical beam |
对称 光 : 60 phrases in 11 subjects |
Anatomy | 1 |
Automobiles | 12 |
Construction | 1 |
Electronics | 14 |
Hydroelectric power stations | 2 |
Information technology | 1 |
Nursing | 2 |
Oil / petroleum | 1 |
Power system protection | 4 |
Technology | 20 |
Telecommunications | 2 |