Isaacman pointed to hydrogen leaks on Artemis I and helium flow problems on Artemis II as signs that a three‑year gap between launches is not sustainable. When teams only fly every few years, he said, they lose "muscle memory" — the routine, hands-on experience required to handle a complex rocket safely and efficiently.
1.最近一年销售收入小于5000万元（含）的企业，比例不低于5%。。搜狗输入法2026对此有专业解读
，这一点在WPS官方版本下载中也有详细论述
19:24, 27 февраля 2026Наука и техника，更多细节参见搜狗输入法下载
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