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51. | vertical flight |
| 垂直飞行 |
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52. | vertical command system |
| 垂直指挥系统 |
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53. | vertical component |
| 垂直分量 |
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54. | vertical landing point |
| 垂直着陆点 |
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55. | vertical conveying |
| 垂直输送 |
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56. | vertical exposure |
| 垂直曝光 |
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57. | vertical cross section |
| 垂直截面 |
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58. | vertical fracture |
| 垂直裂缝 |
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59. | vertical elevator |
| 垂直提升机 |
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60. | vertical lap seam |
| 垂直缝 |
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