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又是一箭雙星！我國成功發(fā)射兩顆北斗三號導航衛(wèi)星

來源："裝備科技"微信公眾號作者：鄒維榮王勝發(fā)布：2018-07-29 14:36:53

▲長征三號乙運載火箭一飛沖天。呂炳宏攝

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