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
125I-HSA
adtp
altarlike
arprinocid
asymmetric quantum wells
attractical
Ban Channabot
blockbuster drug
blutwursts
bond possessor
bornaprolol
bresaola
brokenheart
centralization of libraries
cinocentrum
come off crabs
customary law
cycle heat rate
cylinders
D-O
danish seine trawl
darthenware pipe
electromechanical selector switch
enroute base
eppie
extroverted personality
family Carcharhinidae
fastening coefficient
feuilletee
Fighting Joe Hooker
Finnafjördhur
flavacid
forbiddenness of a transition
full-revolution dumper
functor Ext
group coast station
gutturalize
heliocentric orbit
isocorybulbin
Ixodida
jaid
jeanny
jointed charlocks
library item
lysis-
main runway
make a vaunt of
male entente
marbleised
medical-supply
melampsporin
method of multiplexing
mulestein
Navicularis
naycations
ninth-centuries
Norhomoepinephrine
nostro deposit
Obaköy
old wives' fable story
operation diagram
orthogonal Latin rectangle
outconned
page addressing
palladium(ii) acetate
Pergamino
physcion
pich
pomacentrus amboinensis
pre-calculated
preconveyance
projected scale instrument
protector finger
pseudosophisticated
pulpwood washer
Quick B
RCPS
reclining seats
refresh pulse
Rhynchotechum
rivalrousness
road running
Rot-fungus
sciatic tuber
scurred
segmental orifice plate
standard air density
standardizing mail gateway
sterols X
Student Nonviolent Coordinating Committee
supercharging arrangement
sveltely
target programme
the great wall
thyroid disease
topographic profile
tri-mix
two cylinder test results
ultrasonic stroboscope
user-level security
water vapour pressure
zoopathology