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locus of points |
点 轨迹 : 41 phrases in 12 subjects |
Athletics | 2 |
Automobiles | 1 |
Aviation | 5 |
Bridge construction | 3 |
Construction | 1 |
General | 2 |
Hydroelectric power stations | 1 |
Oil / petroleum | 4 |
Polymers | 1 |
Space | 5 |
Technology | 15 |
Telecommunications | 1 |