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11. | direct variation |
| 正变分 |
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12. | genotypic variation |
| 基因型变异 |
|
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13. | adaptive variation |
| 适应性变异 |
|
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14. | musical variation |
| 变奏 |
|
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15. | altitude variation |
| 高度变化 |
|
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16. | delay variation |
| 延迟变化 |
|
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17. | acquired variation |
| 获得性变异 |
|
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18. | compass variation |
| 罗经磁差 |
|
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19. | level variation |
| 电平变动 |
|
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20. | magnetic variation |
| 磁罗经误差 |
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