direct ascent

英汉例句

Direct ascent interceptors such as exo-atmospheric ABM missiles, ballistic missiles with modified guidance logic, space boosters carrying nuclear payloads, and homing vehicles such as the miniature vehicle system undergoing development by the United States.
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For example, instead of the lunar rendezvous method that NASA chose for the Apollo program, the player can opt for Earth-orbit rendezvous or even direct-ascent where a single giant spacecraft lifts off from Earth and lands on the Moon.
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