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spiky surface |
尖面: 41 phrases in 15 subjects |
Air defense | 1 |
Athletics | 1 |
Automobiles | 1 |
Aviation | 6 |
Metallurgy | 2 |
Military | 1 |
Mountaineering | 1 |
Nursing | 2 |
Oil / petroleum | 1 |
Rail transport | 2 |
Space | 3 |
Sports | 1 |
Surgery | 2 |
Technology | 16 |
Textile industry | 1 |