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| 41. | pile foundation |
| 桩基础 |
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| 42. | earth foundation |
| 土基础 |
|
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| 43. | gravel foundation |
| 砾石基础 |
|
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| 44. | foundation planting |
| 基础种植 |
|
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| 45. | foundation ditch |
| 基础沟 |
|
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| 46. | foundation eugenics |
| 基础优生学 |
|
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| | |
| 47. | foundation economics |
| 基础经济学 |
|
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| | |
| 48. | foundation framework |
| 基础框架 |
|
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| | |
| 49. | foundation engineering |
| 基础工程学 |
|
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| | |
| 50. | pier foundation |
| 墩基础 |
|
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| | |