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音响系统 | |||
声学系统; 放声系统 | |||
声音系统; 伴音系统 |
sound system : 81 phrases in 19 subjects |
Air defense | 1 |
Archery | 1 |
Automobiles | 7 |
Aviation | 7 |
China | 3 |
Cryptography | 1 |
Electronics | 13 |
Finances | 3 |
Fishery fishing industry | 1 |
General | 2 |
Multimedia | 2 |
Nautical | 2 |
Nuclear and fusion power | 1 |
Oil / petroleum | 1 |
Securities | 2 |
Space | 5 |
Technology | 24 |
Telecommunications | 3 |
United Nations | 2 |