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
aerosinusitis
Alleins
alwaleed
anonymous methods
aperture plate
arenium ion
baronetages
biuret paper
boletellus lignicola
brisbanes
charcoal pencil
chromatostack
claims priority
combustion reactions
common mode rejection ratio
coronale
counterfactual
Coxeter diagrams
custard
cytoxin
Darwin's theory of emotion
date of entry
deceleration (retardation)
dendrochronologists
diabetic stomatitis
double-breasted
down at the heels
dynamic dispatching
entropy gradient
equivalent form of value
Eurodollar deposit
famous brand
feeble respiration
fold axis
forming horn
four point contact ball
fracture of malar bone
frictional cat head
full dyeing
gamma-BHC
Glidewell
halving circuit
heat-supply load factor
high lift jack
hot plugging
hypoleukaemia
impetigo herpetifomis
induced enzyme
intercalated graphite
internal magnet
kanaima
Kubitzer Bodden
Lie algebra
liquid cargo operations training system
magalogs
manufacturer's output floater
Marlboro Friday
metalothionein
misdealt
mixidine
multiple action controller
nose cabin
objectation
oedema bnllosum vesicae
order of restitution
overhead foot bridge
Pancoast's operation
phenylmethyl
phorophytes
pin bush
pledge of movable
plutonium tetraiodate
pocket buider
practical ceiling
quartz-keratophyre tuff
rack type pusher
railway sleepers
rear-echelon
recording processing program
repeated bending stress strength
Risley's prism
rivingtons
rotating arm basin
round concave molding
sherwani
shoal rig
slight twist
smilax
Sottunga
speedcubed
spliceosome
stationary-opened metering device
strand sort
symmetric binary tree
syn (synchronization)
the glass
tree sparrow
vermiculatus
veteran car
Viola odorata L.
well-ordereds
Your Holiness