单词	swingby
释义	swingby /ˈswɪŋbʌɪ / noun (plural swingbys) A change in the flight path of a spacecraft using the gravitational pull of a celestial body. Compare with slingshot.This will be the first time lunar swingbys have been used to manipulate orbits of more than one spacecraft.... The current controversy concerning Cassini's upcoming Earth swingby centers on the risk of the spacecraft accidentally re-entering the Earth's atmosphere. A swingby is efficient and cost-effective.
随便看	zip fastener zip file zip gun zipless zip line Ziploc ziplock zipped file zipper zipperhead zippily zippiness zippo zippy zip-up zip wire zircalloy zircaloy zircon zirconia zirconium zit zither zitherist ziti

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