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secular change | |||
long-term variations | |||
secular variation | |||
secular changes | |||
long period variation; long-term change; long-term variation |
长期变化 : 23 phrases in 8 subjects |
Desert science | 1 |
Electronics | 3 |
Finances | 1 |
Metallurgy | 1 |
Piezoelectric crystals | 2 |
Securities | 1 |
Space | 2 |
Technology | 12 |