冲 击 锤: 77 phrases in 17 subjects |
Automobiles | 2 |
Aviation | 1 |
Bridge construction | 2 |
Chemistry | 1 |
Drilling | 1 |
Earth sciences | 1 |
Electronics | 1 |
Engineering geology | 6 |
General | 2 |
Mechanics | 2 |
Metallurgy | 5 |
Oil / petroleum | 4 |
Plastics | 10 |
Polymers | 2 |
Rail transport | 1 |
Space | 2 |
Technology | 34 |