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primary wave | |||
P wave | |||
preliminary; prima |
初波 : 35 phrases in 10 subjects |
Automobiles | 1 |
Aviation | 1 |
Earth sciences | 1 |
Electronics | 1 |
Engineering geology | 3 |
Explosives and Explosive Ordnance Disposal | 1 |
Oil / petroleum | 11 |
Rail transport | 1 |
Space | 1 |
Technology | 14 |