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平顶的 |
flat-topped : 39 phrases in 12 subjects |
Air defense | 1 |
Automobiles | 1 |
Bridge construction | 1 |
Desert science | 2 |
Drilling | 1 |
Electric machinery | 1 |
Electronics | 2 |
Engineering geology | 4 |
Geology | 1 |
Hydroelectric power stations | 2 |
Oil / petroleum | 3 |
Technology | 20 |