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(441) / 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(349) / 评论(0) 分类 万花筒2013年
学英语单词
aecidium urenae
altitude flight
artificial cementing
automatic ventilating side light
Ban Kadian
base-order
Benedict-Denis' method
bone-seeking isotope
Brasovskiy Rayon
Bravais symbol
broomy
burst pin detection system
cartonfuls
centrifugal refrigerating machine
clawe
clay crystal
Clematis alsomitrifolia
COHMC
compound bows
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damage by mosture
davil
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epiplastra
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error of focusing
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geographic elements
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guarland
gynecological mass in abdomen
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inclined hoist with double skip track
inclip
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Jasionówka
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Michinberi
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mln
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onum
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polysilicic acid
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reprepares
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rockwell hardness test rod and drop-pull system
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rupture of bronchus
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semi-silica fireclay brick
single phase rectifier
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sperm pump
sphenoidal tetartohedry
spimmers
strain point
syntympanostapedia
tabletlike
tang length
tank sheet iron
this that and the other
Thmar Bang
transglycosylate
unspied
Vietnam War
visitator
wedge termination
wipe off the face of the earth
wrapps