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| 21. | multiple span bridge |
| 多孔桥 |
|
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| 22. | infinite span wing |
| 无限翼展机翼 |
|
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| 23. | depth-span ratio |
| 高跨比 |
|
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| | |
| 24. | single span footbridge |
| 单跨行人天桥 |
|
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| 25. | memory span method |
| 记忆广度法 |
|
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| 26. | multiple beam span |
| 多梁桥跨 |
|
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| 27. | Memory Span Test |
| 记忆广度测验 |
|
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| 28. | life span development |
| 毕生发展 |
|
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| 29. | mid-span moment |
| 跨中弯矩；跨中力矩 |
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| 30. | healthy life-span |
| 健康寿命 |
|
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