first cosmic velocity; orbital velocity
Tone colorsmāmámǎmàma
Meanings
1 sense · 3 examplesnoun
first cosmic velocity; the minimum speed required for an object to achieve a stable circular orbit around Earth
formalA specific term in astronautics and physics. Also called 环绕速度 (huán rào sù dù). The exact value is approximately 7.9 km/s.
Huǒ火
jiàn箭
bì必
xū须
dá达
dào到
dì第
yī一
yǔ宇
zhòu宙
sù速
dù度
cái才
néng能
jiāng将
wèi卫
xīng星
sòng送
rù入
guǐ轨
dào道
。
A rocket must reach the first cosmic velocity to place a satellite into orbit.
Dì第
yī一
yǔ宇
zhòu宙
sù速
dù度
de的
jì计
suàn算
kǎo考
lǜ虑
le了
dì地
qiú球
de的
zhì质
liàng量
hé和
bàn半
jìng径
。
The calculation of the first cosmic velocity takes into account Earth's mass and radius.
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Rén人
zào造
wèi卫
xīng星
de的
fā发
shè射
sù速
dù度
zhì至
shǎo少
yào要
chāo超
guò过
dì第
yī一
yǔ宇
zhòu宙
sù速
dù度
。
The launch speed of an artificial satellite must at least exceed the first cosmic velocity.