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近来许多读者向我们反映,要求多介绍一些航空航天的基础知识,为此,我们特开辟航空航天基础知识讲座一栏,以飨读者,并请给我们提出宝贵意见。
Recently, many readers have reported to us that they should introduce more basic aeronautical knowledge. To this end, we have opened up a column on aeronautics and astronautics basic knowledge to readers and invited us to provide valuable suggestions.