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Terms
for subject
Aviation
containing
preparatory
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exact matches only
English
Chinese
data relay satellite
preparatory
programme
数据中继卫星筹备计划
Earth observation
preparatory
programme
欧洲航天局
地球观测筹备计划
earth observation
preparatory
programme
地球观测筹备计划
long term
preparatory
programme
长期准备计划
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