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(234) / 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(366) / 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
Ab Fab
abiophysiology
aerosol cheese
allowable loading capacity of wagon
altisine
anterior pituitary basophil-cell tumor
antichav
autoduality
avermedia
barasinga
beer runs
binding on
bump bluey
callogobius nigromarginatus
Caprimulgus europaeus
central inspection
charge transfer spectrum
cocaine addictions
consistent minority
console converter
cyclotron-accelerated
cylinder speed control lever
decoking time
deductivist
dekapoise
double end stud
elytrostenosis
enniss
Fagnes, Mt.
flexible name
form of books
garmston
genetic recombina-tion
grease fleece weight
habiliment
haematogenous
height of coupler centre above rail level
high tension distribution system
human approach
hydrostatic pressure test on tube of metal
impinge upon
intercollege
interface-MIL STD 188B
kewenig
lacrimals
legalise
light verb
limit of the atmosphere
liquid phase polymerization
loading indicator
logocentrisms
majorities
marriages
Mayamalavagowla
multipoint network control system
mulvihill
narro
nitrogen oxide dosi-meter
normal crop rotation
Nunivak event
Nusa Tenggara, Kep.
open loop control circuit
oreth
osteoidosteoma
past reclaim
physical scale
preverbally
prison good-time credit system
private forest
protection of distance
protective antibodies
pynchons
rachialbuminimetry
retarded elasticity
salzburgs
sawhorses
scenic spot of minority customs
see-thru
softening kettle
solutionally
speed control by pole changing
sterile immunity
stream rate
synchronized shutter
terebrates
The fool's bolt is soon shot .
thiemann
thread veins
through-wax
thryssa chefuensis
thyroid region
Tirril regulator
tracker processor
transformer station
Uetersen
ummeliata insecticeps
unanatomized
underfillings
user label information
V-door
when the chips are down
wood chopper