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| 51. | meteor activity |
| 流星状活动 |
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| 52. | linear activity |
| 线性放射性 |
|
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| 53. | feeding activity |
| 摄食活力 |
|
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| 54. | management activity |
| 管理活动 |
|
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| 55. | fermentation activity |
| 发酵活性 |
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| 56. | maritime activity |
| 海事活动 |
|
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| 57. | displacement activity |
| 替代活动 |
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| 58. | commercial activity |
| 商务活动 |
|
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| | |
| 59. | delayed activity |
| 缓发放射性 |
|
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| | |
| 60. | thermionic activity |
| 热电子激活性|热放射效率|热离子激活性 |
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