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单词
ion propulsion
释义
WordReference Random House Unabridged Dictionary of American English © 2024
i
′
on propul′sion,
Rocketry
a projected type of propulsion for vehicles in outer space, the exhaust consisting of positive ions and negative electrons repelled from the vehicle by electrostatic forces, resulting in a very high exhaust velocity.
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frères
fréchet
fréchette
frémont
fröding
f.s.
fs
f.s
fsa
fsb
fsh
fslic
fso
fsr
f star
f stop
f-stop
ft.
ft
ftc
fth.
fth
fthm
ft-l
ft-lb
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更新时间:2025/10/15 13:48:08