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Terms for subject Hydroelectric power stations containing 周 期 变化 | all forms | in specified order only
| Chinese | English |
| 周期性变化 | periodic variation |
| 库水位年周期变化 | annual periodic fluctuation of reservoir level |
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| Chinese | English |
| 周期性变化 | periodic variation |
| 库水位年周期变化 | annual periodic fluctuation of reservoir level |