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单词
annulus
释义
annulus
The plane figure formed between two concentric circles of different radii,
R
and
r
. Its area is π(
R
2
-
r
2
)
随便看
azimuth
azimuthal quantum number
Babbit metal
Babo's law
back e.m.f.
background radiation
backing store
backup
balance
ball lightning
ballistic galvanometer
ballistic pendulum
ballistics
Balmer series
band spectrum
band theory
bandwidth
bar
Bardeen, John
Barkhausen effect
barn
barograph
barometer
barycentre
barye
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更新时间:2025/6/23 0:40:38