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51. | launch a vessel |
| 放船下水 |
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52. | launch vehicle configuratio |
| 运载火箭构型 |
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53. | Saturn launch vehicle |
| “土星”号运载火箭 |
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54. | launch control centre |
| 发射控制中心 |
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55. | echo sounding launch |
| 回声测深艇 |
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56. | Ariane launch vehicle |
| “阿里安”号运载火箭 |
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57. | A launch window. |
| 发射时限 |
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58. | Launch Service Agreement |
| 发射服务协定 |
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59. | launch control board |
| 发射控制台 |
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60. | launch an campaign |
| 发动运动 |
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