时间:2019-03-06 作者:英语课 分类:英语时差8,16


英语课

 “Probably all, or nearly all, who have experienced a cold winter, are familiar with the cheery cry of the snow as it is pressed against a hard surface by the steel tire of a wagon 1, for instance, or even onto a pavement by the heels of one’s boots.” Those words were written many decades ago by the physicist 2 W.J. Humphreys in a book called Physics of the Air. Humphreys went on to suggest that creaking of snow is connected with very cold temperatures. Humphreys said that when the temperature is just below freezing and snow is easily packed into snowballs, footsteps and rolling wheels won’t create much sound. His reasoning is based on the fact that applying pressure to ice lowers its melting temperature. If ice is so warm that it’s about to melt anyway — say, at a temperature of 30 or 31 degrees Fahrenheit 3 — then a little pressure will be all that is necessary to melt it.



n.四轮马车,手推车,面包车;无盖运货列车
  • We have to fork the hay into the wagon.我们得把干草用叉子挑进马车里去。
  • The muddy road bemired the wagon.马车陷入了泥泞的道路。
n.物理学家,研究物理学的人
  • He is a physicist of the first rank.他是一流的物理学家。
  • The successful physicist never puts on airs.这位卓有成就的物理学家从不摆架子。
n./adj.华氏温度;华氏温度计(的)
  • He was asked for the boiling point of water in Fahrenheit.他被问到水的沸点是华氏多少度。
  • The thermometer reads 80 degrees Fahrenheit.寒暑表指出华氏80度。
学英语单词
Accounting Arrangements
adergneiss
appearance surface
Arnold-Chiari deformity
back log
boron frits
bronchi segmentalis anterior
Calamus platyacanthoides
calibration load cell
campanologist
carran
carries
Cauchy horizon
cerast
character divergence
cinnamon-apple
counter-tide
cramer's formula
cutlery steel
david ricardoes
descreen
digital servo control system
dry bituminous coal
electrode overvoltage
epibiotic endemic species
esophagofibroscopy
expansion cost
extraction display
fancy-bred
finite codimensional
forage equipment
frame spacing
Gaelicizes
ganglia isthmi
geometric ratio
gymnospermy
haptoglobin-hemoglobin
heartling
high-impedance state
Huygen's principle
hyperthymestic
impulse regeneration
in banc
industrial marketing
karadeniz kemence (turkey)
Kiistala
kyshtym
lithotomyprobe
low hundreds
material piling machine
method of chain relatives
Mexiana, I.
mlook
monotoneity
move foward
musculus ischiofemoralis
natural transmutation
noise audio gram
oesophagology
overfreight
oyss
pacier
parameds
pennae
pisos
place of transshipment
plasmodiocarpous
plimoth
Predalon
premeriting
prunella montanella
pseudolamination
rapeseed meal
remote continual verification system
rifamoin
robot tank
salonistes
sand paper disk
scum bags
seize with both hands
send file
silhouette picture
simbayi
single-port
snurrebok (sweden)
St Vincent
stretch forth
Sublime Porte
superior earnings
switch back
swsisnsds-s
Tandearil
task name
the running of
theocratize
thermosol
tolilic acid
Toplice
universal pipe joint
unscaling
wearing of rail
white cohosh