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我国正研发4米、5米级新火箭，5米级是长征十号，4米级是哪一款？
我国正研制4米、5米级可复用火箭，明后年首飞！是哪两款火箭？
大国航天新科技70/82
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App02:36我国正研制4米、5米级可复用火箭，明后年首飞！是哪两款火箭？
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