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| 21. | volcanic activity |
| 火山活动;火山活动性 |
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| 22. | function inspection,function test |
| 功能检查（功能测试） |
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| 23. | function element |
| 功能器件;功能元件 |
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| 24. | Functional Activity |
| 气机 |
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| 25. | catalytic activity |
| 催化活性 |
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| 26. | accounting activity |
| 会计活动 |
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| 27. | conscious activity |
| 自觉的能动性 |
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| 28. | sunspot activity |
| 太阳黑子活动性 |
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| 29. | Nuclear activity |
| 核活性 |
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| 30. | moral activity |
| 道德活动 |
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