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packer |
堵水 塞 : 57 phrases in 11 subjects |
Automobiles | 1 |
Desert science | 1 |
Drilling | 4 |
Electronics | 1 |
Engineering geology | 2 |
Explosives and Explosive Ordnance Disposal | 4 |
Metallurgy | 27 |
Navigation | 1 |
Oil / petroleum | 6 |
Technology | 8 |
Water resources | 2 |