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无应力的 | |||
无应力 |
stress- free : 32 phrases in 12 subjects |
Aviation | 1 |
Electric machinery | 1 |
Electronics | 1 |
Engineering geology | 5 |
Explosives and Explosive Ordnance Disposal | 1 |
Metallurgy | 5 |
Oil / petroleum | 2 |
Plastics | 2 |
Polymers | 1 |
Rail transport | 3 |
Space | 2 |
Technology | 8 |