单级滤波器;单节滤波器

[00:00.00][s],[ ][ ] [00:38.61]sea/sheet/chicken [00:42.66]Exercise One: Word Conparison [00:47.62]Listen to the following words from your tape and repeat. [00:52.98]sip ship sane shane watched washed [01:01.23]lass lash least leashed chin [01:09.09]

发表于:2018-12-03 / 阅读(127) / 评论(0) 分类 掌握英语发音

But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi

发表于:2018-12-11 / 阅读(70) / 评论(0) 分类 365个英语简短小故事

From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a

发表于:2019-01-03 / 阅读(65) / 评论(0) 分类 2018年VOA慢速英语(一)月

[0:0]feedback female fertile fertilizer反馈,反馈信息 雌的,女性的 肥沃的,富饶的 肥料 [1:25.7254]festival fiber fiction fierce节日,喜庆日 纤维 小说 凶猛的,残酷的 [2:12.0330]file filter finally finance档案,文件 过滤器,过滤咀 最后,终于 财政,金融 [3:1.05

发表于:2019-01-16 / 阅读(90) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica

发表于:2019-02-03 / 阅读(92) / 评论(0) 分类 2007年VOA标准英语(五月)

1. You don't have to see each other every day. 你们不必每天都见面。 If you can, then why not? But you don't have to nag each other about you or your partner coming over just because you haven't seen a glimpse of each other for the day (yet)

发表于:2019-02-06 / 阅读(53) / 评论(0) 分类 实用英语
学英语单词
algebrai
alkali degradation
amelocemental junction
auriculastra subula
average revolutions
axiodistal
azorubin S
bellows-type regulator
blood wood
bolte
burned iron
car phone, carphone
carpenter's file
center-of-mass frame
chern
cold store boat
common service area
commutator-inspection cover
constructs
criteria selection
depreciation of the exchange value of the Hong Kong dollar
Dianemvcin
Diesel electric shovel
double-core shower
drama studio
eastern United States
escape sb.'s lips
escort to
expiring laws
extemporiser
factory administration department
field applications engineer
flat-position
frame scan transformer
freely burning fire
frequent urination
frustra-tion
guide wire line
headed by
heilpern
hoosier states
humanisations
idololatric
imposturize
inhibiting effect
insert rack bit
ixodynamics
jim hensons
kapadia
kell
Königsfeld im Schwarzwald
leaching colloidal
Lowenberg-Abel bacillus
lymphadenoma cell
maturing agent
mcias
measuring signal
mitraversine
Mondayish
multiorgasms
multiple wheel load
neuro-pattern
neurolemmal cell
nightshifts
obligatory maturity
omega oxidation theory
open fires
orangeyellow
orectolobus barbatuss
palaeontologists
palfium
parallel detection
peripheral function translator
pneumonitic
quarantine inspector
regular hand tap
regulated water stage
remote control pressure reducing and air cleaning station
roll opening
S'holder
sdios
SE-IG
steam grate shaker
step-stool
surface level
sweatlodge
tague
tank-wall connector
The Boeing Company
the criminal justice system
time lapse cinematography
tool-path
touch you
unit normal distribution
unrecouped
upper limbs
viroplasma
water quencining
window transformation
winter grade
yonder
Zardari