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圆切面 |
circular section : 28 phrases in 11 subjects |
Automobiles | 2 |
Aviation | 1 |
Bridge construction | 6 |
Ecology | 2 |
Engineering geology | 1 |
Hydroelectric power stations | 2 |
Metallurgy | 1 |
Oil / petroleum | 1 |
Polymers | 1 |
Technology | 9 |
Wind Energy | 2 |