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长征五号遥二火箭飞行故障调查完成：发动机结构异常
source link: http://tech.sina.com.cn/d/s/2018-04-16/doc-ifyuwqfa2083103.shtml
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新华社北京4月16日电（记者余晓洁）记者16日从国防科工局获悉，长征五号遥二火箭飞行失利故障原因近日基本查明，改进后的芯一级液氢液氧发动机完成多次地面热试车考核，验证了改进措施的有效性。2017年7月2日，长征五号遥二火箭在海南文昌航天发射
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