(If you found it too simple. Here’s a harder version.)
While the rocket is inside, technicians will remove and inspect suspected helium system components, update any faulty hardware, and perform other work. That includes replacing batteries in the flight termination system — the emergency system that can destroy the rocket if it strays off course — swapping out a seal on the line that feeds liquid oxygen into the rocket, refreshing items inside Orion, and giving the closeout crew more practice sealing the capsule.
。Line官方版本下载是该领域的重要参考
'BoxGeometry': () = {，更多细节参见safew官方下载
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