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China space activities
释义
China space activities
Encyclopedia
工学
﹝各国航天﹞
释
China space activities
中国航天
中国是世界上第五个独立研制并发射人造地球卫星的国家。中国航天活动领域广泛,处于世界航天大国行列。1970年4月24日,中国研制的长征一号运载火箭成功发射了中国第一颗人造地球卫星“东方红一号”。截至2018年年底,中国共成功实施313次航天发射,发射航天器499个,其中在轨运行航天器282个(只包含中国发射的所有权归中国的航天器,下文同)。
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medium maintenance project
medium manganese ductile iron
medium-mass nucleus
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medium museum
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Medium of artistic communication
medium or low frequency data
medium or low frequency trading
medium power light-emitting diode package
medium price housing
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medium-range order structure
medium resistance
medium ring
medium salt medium
Medium Scale Anisotropy Measurement Experiment
medium scale geology map
medium-scale integrated circuit
medium shot in film
medium-sized city
medium-sized pumped storage power station
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