超高速冲压喷气发动机引擎在飞机超过音速的情况下不能启动。

Scramjets engines can not start until the plane flies faster than the speed of sound.

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然后，火箭发动机点火启动，飞船提速达到3倍音速，升入地球的大气层上空。

Then the Enterprise's rocket motors will ignite, accelerating the ship to three times the speed of sound, taking it up over the Earth's atmosphere.

youdao

然后，火箭发动机点火启动，飞船提速达到3倍音速，升入地球的大气层上空。

Then the Enterprise's rocket motors will ignite, accelerating the ship to three times the speed of sound, taking it up over the Earth's atmosphere.

youdao