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(393) / 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(305) / 评论(0) 分类 万花筒2013年
学英语单词
acet
acropetal
airstair
angelick
back-back
baizley
Baron's sign
be highly reputed
befuddles
bostrychoid
Bricelyn
bulk truck
canelo
carriage apron
cerium rouge
CFSR
chemical storage
clutch springs
collection on bill
concutient
control system simulation
corporatisations
crastination
cretinismus
dead track
decimetric feeder
demoded
diagram of the situation
dichlorison
distribute bonuses out of profits
DNSW
docu-soap
Everglades City
excavated lesion
exchange policy
Facts is often stranger than fiction.
flame retardent
flywheel horsepower
forschungsgemeinschaft
From Saved
fuel oil booster pump
function mechanism
gochis
granite tag
Henri Toulouse-Lautrec
hexaric acid
intransigence
Ishigeaceae
Jaeger's test type
jare
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Lutetian
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material for reactor coolant
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nert
neutral zone of competition
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ore loading crane
outer dead center
Paradise Island
peace conference
perchlorinated polyvinyl chloride
perigean
permanent appropriation
pholidophorid
photosensitive switch
plant utilization
platinum blonds
pole-type substation
Porto, Dist.do
posterior tibial nerve
queuing process
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shadow table
sik
slurry gun
solar ecliptic of coordinates
solosympodiella phyllostachydis
spissus
squillionth
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striped cucumber bettle
suicide mission
swinged
synzygote
the toybox
throttled
tilting burner control
told of
Turkmen Soviet Socialist Republic
ultra low density polyethylene
unpierced bulkhead
valve-opening period
veiled plates