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希望与期待——几内亚散记
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作者 官彤 《当代世界》 北大核心 1998年第6期35-36,共2页
希望与期待———几内亚散记·官彤4希望与期待———几内亚散记·官彤·月初,笔者随中国共产党代表团访问了几内亚。这是笔者第一次踏上黑非洲的土地,在紧张的官方访问同时,好奇的眼睛也在打量生活在这块神秘土地上的... 希望与期待———几内亚散记·官彤4希望与期待———几内亚散记·官彤·月初,笔者随中国共产党代表团访问了几内亚。这是笔者第一次踏上黑非洲的土地,在紧张的官方访问同时,好奇的眼睛也在打量生活在这块神秘土地上的人民。几内亚地处西非,位于北纬10度左右,西濒... 展开更多
关键词 几内亚 可乐果 热带草原气候 铝矾土 主要生产部门 运货工具 小伙子 T恤衫 居民购买力 几内亚人
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Maiden Flight of Long March 7--The New Generation Medium Launch Vehicle in China 被引量:2
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作者 WANG Xiaojun FAN Ruixiang +2 位作者 CHENG Tangming XU Lijie YANG Haoliang 《Aerospace China》 2016年第3期12-18,共7页
On June 25, 2016, the Long March 7(LM-7) launch vehicle completed its maiden flight successfully. LM-7, as a new generation of medium and basic launch vehicle based on the design concepts of non-toxic and nonpolluting... On June 25, 2016, the Long March 7(LM-7) launch vehicle completed its maiden flight successfully. LM-7, as a new generation of medium and basic launch vehicle based on the design concepts of non-toxic and nonpolluting, was developed for the purpose of launching a cargo spacecraft to the Chinese space station. Based on the experience on launching cargo spacecraft and satellites, LM-7 can be adapted for mainstream satellite launch missions in the future with its characteristics of serialization and continuous optimization. LM-7 is expected to be used to launch manned spacecraft in the future. This paper presents a general review of LM-7 with regard to the general scheme and provides references for the development prospects of a medium launch vehicle series in China. 展开更多
关键词 New generation medium launch vehicle General scheme Development prospects
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