音标:['pә:miәn] ;
a. 二叠纪的, 二叠纪岩的
n. 二叠纪(岩)
n. from 280 million to 230 million years ago; reptiles
词型变化:名词复数形式 : permians

Permian的用法和样例:

例句

用作形容词(adj.)
  1. Permian bioclastic limestone and bioherm are the most favorable reservoirs.二叠系生屑灰岩和生物礁为最有利的储层。
  2. The clastic rocks in Permian System at the southeast area of Ordos Basin contain tremendous potential in exploration of natural gas.鄂尔多斯盆地东南部二叠系碎屑岩具有巨大的天然气勘探潜力。
用作名词(n.)
  1. Cathaysian Flora extincted totally at the end of Permian.华夏植物群在二叠纪末绝灭。
  2. During the Permian, the continents joined to form a single supercontinent, Pangaea.二叠纪时期,各大陆组合成了一个单一的超级大陆板块盘古大陆。

词汇搭配

  • Permian system二迭系
  • Permian period二迭纪
  • the Permian二叠记
【近义词】

37 研究表明2500万年前流星曾碰撞过地球 DATE=4-18-01 TITLE=SCIENCE REPORT - Meteor Collision With Earth BYLINE=Jill Moss (Start at 59

发表于:2019-01-16 / 阅读(236) / 评论(0) 分类 科技之光

Science and technology 科学技术 Mass extinctions 大灭绝 Small but deadly 陨石很小不过危害却很致命 The biggest extinction in history was probably caused by a space rock that changed the climate 历史上规模最大的一次物种灭绝

发表于:2019-02-06 / 阅读(140) / 评论(0) 分类 经济学人科技系列

Earth has seen five major extinction episodes in its time the Ordovician, Devonian, Permian, Triassic, and Cretaceous, in that order and many smaller ones. 地球已经目睹了5次大的灭绝事件依次在奥陶纪、泥盆纪、二叠纪、三叠纪

发表于:2019-02-17 / 阅读(159) / 评论(0) 分类 万物简史
学英语单词
academic intelligence
Aconitum alpinonepalense
adjusting mechanism
aggregometry
Al Kuwait
asymptotic plane
awrong
axis-cylinder
Badiotella
balled plant
barnpot
benzpiperilone
Bromanautine
canistel
canterville
carbonized beer
caucus-goers
circumplex
classification of economic units according to sectors
continuous fin welder
contour polishing wheel
cornu majus
dibsi (dibse)
disabuse
dock head
double end locomotive
dry low nox combustor
Duwaynah
electric slow cooker
enpowder
entagenic acid
entoiling
estimated weight
ethanolamine phosphotransferase
excitation-regulating winding
facies fibularis
farmers' family
fibre science
fidgeter
frequency modulation generator
fresnel law of reflection
gas anesthetic
germinated
glyniss
hectocotylization
hose clamps
hydraulic plywood press
hyper text markup language
impresso
inert gas smothering system
jointing plate
jovenes
keto-dibasic acid
laccetti
Lapscheure
leg opener
level telescope
load-line draft
LRPA
Maikala Ra.
metal wool
minigolfer
moidering
multilists
multiple anomaly syndrome
N-isobutylaniline
natrium glycocholicum
nonskater
nordique
norma ventralis
one two
overheat
parallel-sideds
percentage saturation
perceptual skill
pipturus arborescens
poesis
Portsmouth ball valve
post-edit
radio-trackings
ramus sinister arteria hepaticae propriae
range conversion
rubidium pertantalate
saline method
salt-marsh plain
salvelinus namaycushes
sanitary convention
simulated air combat
spirillar
starting conditions
STD bus
Stephensburg
Strychnos cathayensis
surface finish measuring appliance
TDTL (transistor diode transistor logic)
terminal alveolus
torsion ideal
trait-like
universal plotting sheet
Ust'-Ulagan
wavelength shift
zero-surface