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日本宇宙开发事业团打算改进Ｈ－２火箭的性能长时间以来日本宇宙开发事业团一直在进行改进Ｈ－２火箭性能的方案研究。此项工作还在进行之中，最后方案在很大程度上取决于未来的有效载荷。据宇宙开发事业团透露，改进方案包括：采用６台固体火箭助推器，但省去现在的第二...
JAXA intends to improve performance of H-2 rockets JAXA has been undertaking a program study to improve the performance of H-2 rockets for a long time. This work is still under way and the final solution will depend largely on the future payload. According to the Cosmos Development Group, the improvement program includes: 6 solid rocket boosters, but save now the second ...