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
aesthesiometer
airmens
assessment centre
atrial natriuretic peptide
available wavelength
axial position indicator
beating off
belt-drived centrifuge
bhuna
blank ratio
Brumovice
bywaters
CALCIOFON
clipper hand straw cutter
cor pulmonale
corpus adiposum infrapatellare
CrystalMark
dead-end main
deep-sea terrace
dejabrew
dual-energy x-ray absorptiometry
elatol
engomphosis
exotic metal
experimental standard deviation of weighted arithmetic mean
feculence
Femorofemoral
fixed telephone
flow chart generator
flow debugging
forrester research
fresh water sediment
genus conocarpuss
go over sth
gridded charts
Gwalior
hemophilus of Morax-Axenfeld
hornbeak
i-witterli
Ia.,IA
innovating type investment
interior blue stain
Japanese apricot flower
JEM1p
jugendweihe
kinorhynchs
knee grip
leiomyomatosis
liquid medicine
Logipi, L.
metalliferous veins
Morskogen
motion studies
multiple harmonic
needs-assessment
note row
opalising
operating cylinder piston head
pace bowler
passing ability
periodide
perturbing potential
piarachnoid
PORITIDAE
programmed forecasting inventory technique
Prunus dulcis
pseudotransverse division
Qaboos bin Said
quadrillionfold
quintessenced
range extrapolation
rdiotelemetry
recanalisation
recontextualised
retain over
reverifications
roentgen-rays
salizzoni
school address
Seekoegat
srp (seat reference point)
srull
St. Andrew's-cross
stock torque
sulci petrosus inferior
sulfoichthyolate
Syriacism
temporary command
Thibet cloth
TulipaL.
Tuzlu Gölü
twin decker ship
unimak
vertebral canal
violent movement
wafer scrubber
warashina
wave peak
wave shearing force
went through the motions
works management
xanthophyceaes