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
.ccb
Adelostemma gracillimum
air defense
Aspergillus gliocladium
attorneys-at-law
Bosch, Carl
bromo-methyl-ether
Browning, John Moses
brummer
business-based
Chamaecyparis obtusa
Cisjordania
civil duties
clamp buffer
collura
crematoriums
detergences
didee
direct speech act
direct-examine
doubleedged
dual theory of light
empty container mileage
enclosed cockpit
fillups
fire-float
flavour
flooded type
focalized
follicular carcinonia
fracture control technique
frame pedestal thimble
free-space field intensity
genus chrysophryss
Gratiolet's optic radiation
handshake controller
heating hose coupling
high-q (high quality factor)
highly-rated
hollow-head set-screw
horseshoe life buoy U
huperzia phlegmaria
irmelas
Iroise, Mer d'
isogenies
Jacob's coat
Jangseongho
jobmaker
Konice
kusche
leafy powder
leurne
low blueberry
low refractive high dispersive glass
low-pressure purge
malformation syndrome
manual matching operations
mcui
melodeonists
metal-dielectric filter
midcolonial
miscarry
misphrase
Mlicrococcus mastitidis
multicaulis
mutato nomine de te fabula narratur
nitrogen solution boom
non-directional current protection
non-equilibrium thermodynamics
Norwegian elkhound
nuclei Spinalis nervi accessorii
phthalate anhydride
plastic injection moulding machine
polioencephalotropic
polypnea
pressure equipment
privacy network
prohibition sign
qizhi weitong granules
radar rating
ratchet wrenches
rectifier protection
red-eye special,the
reed type comparator
satellite navigational equipment
scarlet haw
scienticomic
sick-rooms
sotyl
strategic propaganda
Sólheimajökull
temperature-compensated equipment
trial-by-legislature
Trilobitae
tyropanoate
ur(o)-
Virgin Islands
walking over
width of panel
winninish
x-ray analysis (of crystals)