音标:[pai'ri:θrɔid] ;
n. [化]拟除虫菊酯,合成除虫菊酯
词型变化:名词复数形式 : pyrethroids

pyrethroid的用法和样例:

例句

用作名词(n.)
  1. Methods The larvae dipping method was used to test the resistance to pyrethroid.方法采用幼虫浸渍法,测定其对拟除虫菊酯类杀虫剂的抗性倍数。

Analysts: Rich, Poor Far Apart in US 研究师称美国贫富差距大 WASHINGTON Many analysts agree there is a wide economic divide in the United States between the destitute and the wealthy. And they say it's not getting any better. But there are

发表于:2018-12-08 / 阅读(338) / 评论(0) 分类 VOA标准英语2014年(一月)

You are a day away from Friday. You're watching CNN studio news. You're 10 minutes away from getting up to speed on xxx. We are starting in China today. Big meeting there. It's the once a year gathering of the national people's congress. It includes

发表于:2018-12-19 / 阅读(353) / 评论(0) 分类 CNN2014年(三)月

Egyptian archaeologists have discovered the bottom part of an unknown pyramid in the Sakkara area about 18 miles south of Cairo. NationalGeographic explorer-in-residence Dr. Zahi Hawass, the Secretary General of the Egyptian Supreme Council for Anti

发表于:2018-12-30 / 阅读(440) / 评论(0) 分类 国家地理2008年

Christmas Celebrated AZUZ: And of course, Christians around the world celebrated Christmas on December 25th, marking the birth of Jesus. One of those celebrations, which you see right here, was held in the city of Bethlehem, the site where Jesus was

发表于:2019-01-08 / 阅读(687) / 评论(0) 分类 CNN2010年(一)月

By Alisha Ryu Nairobi 24 September 2007 The spokesman for the new Eritrea-based Somali opposition alliance tells VOA that the group's Islamist-led forces are in an all-out war against Ethiopian troops in Somalia in a bid to oust the Ethiopians from t

发表于:2019-01-13 / 阅读(486) / 评论(0) 分类 2007年VOA标准英语(九月)

By Al Pessin Pentagon 23 January 2008 A senior U.S. commander in Afghanistan says Taliban and al-Qaida forces in the Pakistan border area are turning their attention more toward Pakistan, and are working together to hit Pakistani forces. Major Genera

发表于:2019-01-13 / 阅读(406) / 评论(0) 分类 VOA标准英语2008年(一月)

The faithful have flocked to the West Bank town of Bethlehem to celebrate Christmas. Christians gather on Christmas Day inside the Church of Nativity, believed by many to be the birthplace of Jesus Christ, in the West Bank town of Bethlehem, Thursda

发表于:2019-01-13 / 阅读(438) / 评论(0) 分类 VOA标准英语2008年(十二月)

Egyptian archaeologists have discovered the bottom part of an unknown pyramid in the Sakkara area about 18 miles south of Cairo. National Geographic explorer-in-residence Dr. Zahi Hawass, the Secretary General of the Egyptian Supreme Council for Anti

发表于:2019-01-22 / 阅读(414) / 评论(0) 分类 自然百科2008年

GWEN IFILL: The cost and affordability of good child care is the focus of the next installment in our series Parenting Now. It's a major concern for families throughout the country. And in different ways, it cuts across lines of class and income. The

发表于:2019-01-27 / 阅读(374) / 评论(0) 分类 PBS访谈教育系列

Charcot-Marie-Tooth disease Chinese腓骨肌萎缩征 Chassalgnac's tubercle Chinese夏桑亚克结节(第六颈椎横突的颈动脉结节) chemical synapse Chinese化学突触 Cheyne-Stokes nystagmus Chinese节律性眼球震颤 chiasmatic cistern Chinese交叉池 childhood dystrophy C

发表于:2019-02-07 / 阅读(395) / 评论(0) 分类 英文语法词汇

Todd: So, now you're a bouncer. What would you say is the best thing about being a bouncer? Aaron: The best thing about being a bouncer, is that I did it mostly through university, and what's great about that is that you're working, when all of your

发表于:2019-02-08 / 阅读(369) / 评论(0) 分类 原版英语对话1000个

Todd: So, now you're a bouncer. What would you say is the best thing about being a bouncer? Aaron: The best thing about being a bouncer, is that I did it mostly through university, and what's great about that is that you're working, when all of your

发表于:2019-03-06 / 阅读(401) / 评论(0) 分类 英语趣味课堂
学英语单词
absorption state
Adenanthera pavonina
akhenatens
andrologist
angakoks
artificial diamond
Asgard
authentication information
azete
base organization
Benoit de Sainte-Maure
blellum
calendrics
cannibalistically
Cayuga Heights
cerberine
chilblained
child psychiatry
chumack
circumstances alter cases
composite rate of depreciation
connatal
coppaol
CRMR
delayed coker
dissettles
Djiroutou
effects of confined waters
end-correction
entrepreneur's income
equalizing dividends
espauliere
etch-bleach
expectancy disconfirmation model
exploration cable
faubuss
feed vane
flat ferry
floating production storage unit
fluidextractum uvae-ursi
full enriched uranium
GDSN
general indirect labour
grand-stand player
graphic representation of frequency distribution
heapable
hemolysin test
heyfield
hillary rodham clinton
Home Ownership Scheme Fund
hylophilus
hypocone
inert gas seal
inherent law
installment buyings
lateral process of tuberosity of calcaneus
livelihood education
local hydriding
lucky beggar
magnetic tail
majority leaders
mechanochemically
moment to change trim one cm (mtc)
Monadidae
multiple modulation radar fuze
multivalent element
nichollsi
operator length
Pedicularis rotundifolia
periherms
piratery
plasmagel sheath
portal-systemic
principal vestibular nucleus
process metrics
pulse compression recording
qatabah (kataba)
quick access
rack-type pusher
radial bracing
remasculinizing
resection of extraocular muscle
retention discipline
revised treaty
saddle pains
sarcocystosis
scaptodrosophila oralis
secondary sol
sharpies
side shears
simply supplied ward
speckled furnace
Spirochaeta balantidis
standard wavelength
subselected
sulfactol
treasury accommodation bill
twiggery
Venzone
warm-heartedness
West African padauk
wolfing down