时间:2019-03-06 作者:英语课 分类:英语时差8,16


英语课

 Snowflakes are small ice crystals. Snowflakes near their melting temperature can, through hand pressure, be made to fuse into a snowball by a process of melting and re-freezing. The snow yields to pressure “gently and progressively” and doesn’t make sound. On the other hand, if the snow is very cold, far below its melting temperature, even the pressure of a boot heel or a wagon 1 wheel won’t melt it. The snow is powdery and won’t form snowballs. Instead, pressure just makes the ice crystals crush and slip over each other as dry particles. That “abrupt and jerky” motion of the dry ice crystals causes vibration 2 and sound, according to Humphreys’ book. So W.J. Humphreys claimed that snow creaks when the weather is very cold, but not when the weather is only moderately cold. Does that claim jibe 3 with your experience?



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.颤动,振动;摆动
  • There is so much vibration on a ship that one cannot write.船上的震动大得使人无法书写。
  • The vibration of the window woke me up.窗子的震动把我惊醒了。
v.嘲笑,与...一致,使转向;n.嘲笑,嘲弄
  • Perhaps I should withdraw my jibe about hot air.或许我应当收回对热火朝天的嘲笑。
  • What he says does not jibe with what others say.他所说的与其他人说的不一致。
学英语单词
acetidine
adjustable adjuster
Akehama
Alcomax
alienare
astigmatic electron gun
benefit spillover
Bindal
biogeology
block ornament
Cairari
caneine
Canterno, L.di
chemist's
Clitea metallica
coccolith ooze
cohydration
conjury
consimilitude
contribual
crepidomanes nanophullum tagawa
cryogenic valve
damping factor, damping coeffcient
dealcoholization agent
Degifting
Dibay
ducted cooling
Dytuscus
Edna Saint Vincent Millay
fibrilliferous
flexible car roof
folha
formic dehydrogenase
fossa jugularis (regionis colli ant.)
golden red
Gouet
hematoncometry
high-tension ammeter
hurdiyo (hordio)
hypersaline lagoon
hypospray
illegal packet
in activity
inner condenser
inner helical spring
ipkf
jet number
lessens
lime-stone
LWPBR (Light Water Pre-Breeder Reactor)
macrocosmically
Manning equation
marine organism
meld
misportray
netliker
non-serviceable car
nonultrasonic
olfson
overapplies
Oxytropis latibracteata
Parsons Duncan process
pharm.d
phlebotomised
phreatic fluctuations
Picrylmethylnitramine
pin break shank
pismire
pitch control agent
post-boost guidance
printing dye
Prussia
punch-holder shank
ranunculus lyaliis
rebinders
rentas
Retired Senior Volunteer Program
retractor collar
sage-grouses
shaykh abd ar rahman
shoot mutation
sightseeing launch
smockage
solanthrene blue
spack attacks
stapowich
stratum pressure
Sulf-10
supply/demand factor
sworn evidence
tax foreclosure
teleoperations
toe-cap
tree structure directory
tricepts
trillin'
turret clock
uzb
vacuum separation
vertical spindle rotary grinder
wallensis
webworks