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| decline period; depletion period | |||
| period depletion | |||
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递减期 : 32 phrases in 9 subjects |
| Business | 9 |
| Earth sciences | 2 |
| Economy | 2 |
| Finances | 3 |
| International trade | 3 |
| Oil / petroleum | 2 |
| Securities | 2 |
| Technology | 7 |
| Textile industry | 2 |
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