Astronautics. A small area of space through which a spacecraft, asteroid, etc., must pass in order to reach orbit, land on or hit a planet, etc. Cf. w…
单词 | θ207503 |
释义 | society > travel > air or space travel > space flight > [noun] > a space shot or flight > course or trajectory of spacecraft > narrow area to be passed through (1) keyhole1961 Astronautics. A small area of space through which a spacecraft, asteroid, etc., must pass in order to reach orbit, land on or hit a planet, etc. Cf. w… |
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