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
-icide
a mess of pottage
AA against actuals
antfhistamine
ATPG system
automatic built-in check
baader-meinhof
bagot
bang the drum
Bφrglum
cable tensioner
colorimetrical
coronvit
crustliker
cytoskeleton theory
Deacety
dehairing table
delegitimizing
ding-donging
dorj
Dulayb, Khawr
eugenol cinnamate
experimentings
fluorouridine triphosphate
Friderichsen-Waterhouse syndrome
gayly
Guarantee Fees
hand-molded
hard-asphalt mix
hard-sells
hemomanometer with stethoscope
hexadecimal number system
Hunt, Mt.
hydrogen-oxygen vent auto-disconnect coupler
ice caloing
inassimilation
informal test
iridescent virus disease
Jabīsah, Jab.
jeunogastric
jokai
Kamchukchee
Kazanian Stage
life styles
linear algebraic expression
luggee
maculae flava
Malus halliana
maximal prime divisor
mechanical forging presses
mobile programming system
monkey face
Montrouge
mooed
MPEGplus
musculi caninus
naphthieno
nephratony
newlon
normal hydrogen scale
Orthopteroidea
osteogenic fibre
out-and-in bond
outward passage
perturbative function
platoid
polley
precious gift
pressure cylinder
principle of minimum differentiation
pseudo-adiabatic diagram
ring spigot
rudder house
Rutherford's model
santo antonio
sea biscuit
sectional mandrel
shalamcheh
sleeperpod
slushing
sodium cevitamate
strictas
Sukoharjo
sweetbriar
swimmest
tensor shear strain
test train
the Lord's Prayer
theory of perturbations
thyreus decorus
torque balance system
torrijos-carter
troglodyte mode
unclew
unix-
unstuffiness
valtierra
water fennel
Xenia Onatopp
yield per pass
zero correlation
zeuera