压主汽阀,高压危急遮断阀

Cooking Under Pressure When you boil potatoes on the stove top, it can take half an hour to cook them til tender. But, when you boil them in a pressure cooker, instead presto, theyre ready in about five minutes. Whats the difference? What makes press

发表于:2018-12-31 / 阅读(35) / 评论(0) 分类 英语听力文摘 English Digest

The United States has partnered with the United Nations Foundation's Girl Up campaign, Intel Corporation, Google, and other partners to lead the third annual Women in Science Girls STEAM Camp, to enable to girls to study the science, technology, engi

发表于:2019-01-03 / 阅读(95) / 评论(0) 分类 VOA标准英语2017年(8月)

Mechanical problem 2 机械故障2 A: Why have you stopped production? A:你为什么停产? B: We've had a few problems. One of the bolts has worked loose and a blade has snapped off. B:有点问题。有个螺栓松了,一个刀片折断了。

发表于:2019-01-14 / 阅读(84) / 评论(0) 分类 职业技术英语口语

By Melinda Smith Washington 12 September 2007 A recent study indicates that a disturbing number of American children with high blood pressure go undiagnosed. The study has prompted discussion worldwide about whether hypertension among children is jus

发表于:2019-02-03 / 阅读(103) / 评论(0) 分类 2007年VOA标准英语(九月)

There would soon be an explosion; the kettle would be burst open. It is in this way that boiler explosions are often caused. When there is too much steam in a boiler, and it cannot get out, it presses against the sides of the boiler, until at last th

发表于:2019-02-07 / 阅读(81) / 评论(0) 分类 英国学生科学读本

Boiling Water Under Boiling Clouds You may be surprised to hear that its actually easier to boil water on stormy days than it is when the weather is clear and sunny. Can you guess why? The reason is that the boiling point of water changes slightly in

发表于:2019-02-24 / 阅读(45) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
above-threshold region
accelerator board
acoustic sounding
advertising theme
air-purification unit
Andalusia, Andalucia
Assamstadt
begadkephat
bit-error-rate measurements
bolacothrips graminis
box's test
brevig
brush curve
built-in deterministic trend
chappies
childire
crystal cell
cuckoo shots
customary tare
dangerous drug
data weitching exchange
defasciculated
discontinuous timing
discrete category
dishumors
dogmatization
dust collecting installation
embryonic knot
encode table
end cap
eudialyte syenite
failure rate qualification
finite splitting gield
flagging down
flame protection
flash band
form of grain
from the hip
gasoline storage
generic descriptor list
granulomatosum
Greenwich mean time
ground-tunnel structure interaction
hand operate
high precision calender
Hikojima serotype
hormone secretion of carcinoid tumor
hysterostomatomy
in manuscript
interdural space
jubilee wagon
Kilfinan
lawrey
linear transfer machine
LLVY
lot accounting
low-pressure binder spreader
Luvunga
magnetic core store
Makharadze
Metaviridae
mono lever control
NIFOC
non-harmonic constants
occurrences energy
ODVA
open die forging
optical modulation
oxychinaseptol
paving train
ploms
plowtered
pollution layer conductivity
prednazate
promotional material
psychotria capenses
quadrant arm
rakyn
right read
savorily
second order dynamic system
seed harrow
sesamoid cartilages
soap free emulsion
sound-energy flux density
spanish oyster plants
stagnant event
station startup
stay someone's hunger
step faulting
stereoscopic pair(stereogram)
storey height
sulliage
tax abatement
teamsheet
texture brick
tipping points
to win over
toss to and fro
Trachymene
tri-cut
wire coiling