一箭22星，安排上了！ _发射

一箭22星！
长征八号第二发火箭正在进行测试工作，将于2月底或3月初择机发射。

文章图片

与第一发火箭相比，第二发火箭为无助推器构型，这其中有何不同？戳视频，听听专家怎么说。
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