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countable set | |||
countable aggregate; denumerable aggregate; enumerable set | |||
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denumerable aggregate | |||
denumerable class |
可数集 : 20 phrases in 8 subjects |
Aviation | 4 |
Business | 2 |
Electronics | 3 |
Information technology | 2 |
Mathematics | 1 |
Project management | 1 |
Technology | 6 |
Water resources | 1 |