音标:['reidiai] ;
pl. 半径
[医] 半径, 辐射线(解)
n the length of a line segment between the center and circumference of a circle or sphere
n a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
n a circular region whose area is indicated by the length of its radius
n the outer and slightly shorter of the two bones of the human forearm
n support consisting of a radial member of a wheel joining the hub to the rim

radii的用法和样例:

例句

用作名词(n.)
  1. A plane figure bounded by two radii and the included arc of a circle.由两个半径和两个半径中间的弧所形成的一个平面形状。
  2. It is now necessary to introduce a sign convention for radii of curvature.现在必须介绍曲率半径的正负号规则。

词汇搭配

  • radius半径范围
  • collum radii桡骨颈
  • optimum bend radii最佳河弯半径...
  • ratio of ionic radii离子半径比
  • capitulum radii桡骨小头

It sits a million miles away from the Earth 它位于距地球一百万里处的 at the Lagrangian point 拉格朗日点 where the gravitational pull from the Earth and the sun is equal. 此处地球和太阳的引力相等 Fixed in space it has an u

发表于:2018-12-07 / 阅读(293) / 评论(0) 分类 太阳科普

-Im Chris Kaufman and I here with Justin Kasper, who works at Smithsonian, hes an astrophysicist at the Smithsonian. And he's won a project thats gonna launch a probe at the sun, specifically the Solar Wind Electrons Alphas and Protons investigation,

发表于:2019-01-07 / 阅读(225) / 评论(0) 分类 万花筒2013年
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acute bulbar polioencephalitis
advisories
An old dog barks not in vain.
autoacetylated
Banach's closed graph theorem
Barbfish
bogomolov
bread and honey
bremit
carry sth. through to the end
cation exchange site
caudites pailisheyi
childing
citrometers
clapped rod
clock generator
cohostess
cold plastic paint
color video signal
constant strain test
conventional cargo
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curraches
custodian business
date corrector lever
deja vecu
die cutting
distributed bending moment
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dungeon masters
ectopic intestinal mucosa
exterminatable
felonious entry
felse oat meadow
fiasconite
fireproofs
floramultinine
freakishnesses
fuel storage pool bridge
gas filled rectifier
general purpose automatic test system
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homogeneous bounded domain
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I Kings
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lead plate
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Lumnitzera littorea
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neutral axis of hull girder
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scorpaena miostoma
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static error
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take life
talks down
thermomigration
Thomas Merton
three elements of force
traumatonesis
unfused toot
united dance merchants of america (udma)
vamicamide
verbigeration
Wigner threshold law
winbonds