音标:[pɜ:mju:'teɪʃnz] ;
n. (一组事物可能的一种)序列, 排列, 排列中的任一组数字或文字( permutation的复数形式 )
n. an event in which one thing is substituted for another
n. the act of changing the arrangement of a given number of elements
n. complete change in character or condition

permutations的用法和样例:

例句

  1. Multiplication of permutations, unlike multiplication of numbers, is not always commutative.置换的乘法不同于数的乘法,它并不一定满足交换律。
  2. It turns out that all these problems can be solved at once, provided we learn enough about the cycle structure of permutations.结果是,所有这些问题都可以一次解决,只要我们充分地了解各置换的循环结构。

Lesson 6 A B C D 第6课 A B C D 1 Letters 1.字母 A apple A 苹果 B book B 书 C cat C 猫 D door D 门 2 Let's sing a song. 2.来唱一首歌。 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Now I know my ABCs. Next time, sing with me. (歌

发表于:2018-12-12 / 阅读(171) / 评论(0) 分类 VOA2001-国际风云(5)

[00:00.00]REVIEW MODULE UNIT 1 [00:11.21]3.Listen and draw V or X.

发表于:2018-12-12 / 阅读(252) / 评论(0) 分类 新标准小学英语活动用书9册(一年级起点)

You would be nervous if you were representing the human race against a very clever machine. Lee Se-dol, the world champion at Go is due to play a computer with a programme devised by Google. 你若是要代表人类和聪明的机器一决胜负,你也

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一伙戴着外星人面具劫匪抢劫了卢瑟集团运输车盗走了里面东西克拉克刚好路过试图制止却被其中一名劫匪一拳打翻克拉克惊奇地发现居然拥有和自己相似力量!通过X光视线克拉克发现这名劫匪脑骨中镶着一片金属片 克拉克跟踪艾力克到了一家铸炼厂发现提炼氪石里靠吸收氪来增

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学英语单词
aberrant goiter
accelerated convergence
base band transmission
beaded screen
bismuth potassium thioglycollate
blood-grouping reagent
blue-john (fluorite)
bog musk
bring to ruin
bulk structural defect
Bwendi
capsicism
cellulose compound
charter money
claustrum virginale
cogitator
coherent source
coinkidinks
copymoney
countersample
cumulate complex
dekovic
department of banking
dotier
drive - up window
dual currency account
effective ventilatory volume
eroticizations
euphonical
evaporative cooler
faradaic current
filament pyrometer
flangeless
fonsetorigo
foreign short-term claim
function block adapter
gene family
giftcard
glur
hexacore
hippoboscid
houghton-mifflin
ice situation
information content
iron and steel scrap
John Huss
kasenite pegmatite
Kazakh SSR
large bell diameter
Legarde
liquid encapsulation Czochralski method
local standard time (lst)
M.Fr
malt factory
measurement base
medium and high frequency direction-finding stations
Meerkirchen
metalpoints
minimum reflux
mutchico (basque)
needle-holding forceps
non-script
nosing piece
number of significant conditions
occipitomastoid
olivae
on-site production
orchestra seats
outgas(sing)
paranosmia
paraphysis (pl.paraphyses)
photoelectric whirl measuring apparatus
photolethal
photosensitizing pigment
plot of residuals
pressure relief valve
pussyless
put one's feet down
radiism
register of cargo handling gear of ship
religious-experience
rubidium sulfate flame detector
saykur tahtani
sclated
seaports
sex maturity
sgraffito
simplevenation
Sorbus oligodonta
sphere sequence frequency
spirit of legality
splitwheels
staits
Syōwa
tenmoku
thermal aberration
thin-skin calorimeter
Uncaria sinensis
vacuum calcination
video link
Wernicke's sign
wrist bones