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51. | Global Environmental Monitoring System |
| 全球环境监测系统(监测系统) |
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52. | Global Earth Observation System |
| 全球地球观察系统 |
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53. | Global Ozone Observing System |
| 全球臭氧观测系统 |
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54. | global time synchronization system |
| 全球时间同步系统 |
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55. | Global Early Warning System |
| 全球预警系统(预警系统) |
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56. | Global Environment Monitoring System |
| 全球环境监测系统 |
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57. | global navigation satellite system |
| 全球导航卫星系统 |
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58. | Global Field Support System |
| 全球外勤支助系统 |
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59. | Global Terrestrial Observing System |
| 全球陆地观测系统(陆地观测系统) |
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60. | Global Change System for Analysis, Research and Training |
| 全球变化分析、研究和训练系统 |
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