This way of launching and getting back a reusable rocket involves five stages, namely ascent, engine shutdown, unpowered gliding, in-flight engine restart to control speed of descent, and, lastly, soft landing.
发射和
收可重复使用火箭的过程包括五个阶段,分别
上升、发动机关机、无动力滑翔、空中发动机重新点火以控制下降速度,以及最后的软着陆。