浪箭航天研究所
研究航空航天，火箭燃料，化学，物理等理工科领域
全称：浪箭航天固推火箭研究所
简称：LJAS
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1970年4月24日，长征一号成功发射东方红一号卫星，标志着中国成为世界上第五个能够独立发射卫星的国家。长征系列运载火箭的发展共经历了5个阶段。第一阶段是基于战略导弹技术起步，主要包括CZ-1、CZ-2；第二阶段是按照运载火箭技术自身发展规律研制的火箭，包括CZ-3、CZ-3A系列、CZ-4系列；第三阶段是为满足商业发射服务而研制，典型代表是CZ-2E；第四阶段是为载人航天需要而研制的，如CZ-2
HSH
1年8个月前来自投稿
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ID: {{ user.uid }}
{{ user.username }}
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用户已注销
{{ user.info.certsName }}
{{ user.description }}
{{ format('YYYY/MM/DD', user.toc) }}注册，{{ fromNow(user.tlv) }}活动
加载中...
{{ errorInfo }}
{{ downloadWarning }}
你在 {{ downloadTime }} 下载过当前文件。
文件名称：{{ resource.defaultFile.name }}
下载次数：{{ resource.hits }}
所需积分：{{ costScores }}，{{ holdScores }}下载当前附件免费{{ description }}
文件已丢失
当前账号的附件下载数量限制如下：
| 时段 |
个数 |
| {{f.startingTime}}点 - {{f.endTime}}点 |
{{f.fileCount}} |
%7B%22isDisplay%22%3Atrue%7D
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