在束电子游离;束内电子游离

beam, [bi:m] n 大梁(建筑中用作支撑的木材、金属或石头);光柱;臀围;平衡木 【船】横梁; 船幅; 船舷 (秤)杆; (犁)柄; (锄)把; 卷轴; 横杆; 杠杆 (鹿角的)主干 (灯光、日光、月光等的)束, 道,

发表于:2018-12-30 / 阅读(69) / 评论(0) 分类 不择手段背单词

Bob Beamon established himself as the favourite in the 1968 long jump by winning 22 of 23 meets in the pre-Olympic season. He almost met with disaster in the qualifying round. After fouling his first two attempts, he had only one try left. His teamma

发表于:2019-01-08 / 阅读(122) / 评论(0) 分类 英美文化

Right on the beam To fly by the seat of his pants 美国英语当中有许多成语和俗语都和过去的历史有关系。例如,美国开拓西部的过程给美国语言增添了不少色彩。可

发表于:2019-01-14 / 阅读(121) / 评论(0) 分类 美国习惯用语

Early effect 厄利效应 Early failure 早期失效 Effective mass 有效质量 Einstein relation(ship) 爱因斯坦关系 Electric Erase Programmable Read Only Memory(E2PROM) 一次性电可擦除只读

发表于:2019-02-05 / 阅读(68) / 评论(0) 分类 实用英语

Background carrier 本底载流子 Background doping 本底掺杂 Backward 反向 Backward bias 反向偏置 Ballasting resistor 整流电阻 Ball bond 球形键合 Band 能带 Band gap 能带间隙 Ba

发表于:2019-02-05 / 阅读(59) / 评论(0) 分类 实用英语

Neutrons and protons occupy the atom's nucleus. The nucleus of an atom is tinyonly one millionth of a billionth of the full volume of the atombut fantastically dense, since it contains virtually all the atom's mass. As Cropper has put it, if an atom

发表于:2019-02-17 / 阅读(37) / 评论(0) 分类 万物简史
学英语单词
AAYF
anal pore
ankobers
arctic charr
Ashio
bacterial suspension
be in practice
boiler overall efficiency
bomb scare
borageworts
bullpen
capillaria muris-musculi
cather
ccir(consultive international committee on radio)
chersonesus
choline acetyltransferase (chat)
contraction allowance
contralaterally
controller name
corgards
cynophilia
danton
deterministic analysis
documents after acceptance
EMSEC
enterprise search
erythrocyte autohemolysis test
eurose
first steps
flavida
fruiteaters
full parabolic reflector
full shell
genus vulturs
high speed computer
homocinchonicine
homoeotic mutant
hymenalia rufipennis
immanente
imparters
inductor type generator
insertion of withdrawal rate
interactive protocol
interior orientation
Ittiri
Kondremul
large-scale enterprise
latorex
letter-box
Liesegang's phenomenon
Lilium amabile
load capacity
mccgwire
mini-farm
minimum visibility
mode of semi-definite system
Monday Effect
montipora foveolata
munsteads
normal cost standards
Notrees
one hundred and ten
open-sided
opposite sex
order of ordinary differential
osteotomes
ostrean
ovoviviparism
pay raises
Piracuruca, R.
powder bottle
power plane
price sovereinty
primary engage
profiles
propeller-shaft
Q-branch
quadrimolecular reaction
real-time concurrency
refrigerate barge
registration statistics
repeat purchases
reversing face
safety compaign
Santiago de Huata
scoring off
silent pawl drive
stiff brush
suspend A from B
swept resistance
tarot
Tchaikovskyans
teledepth
the same
torque-converter reactor
tospovirus tomato spotted wilt virus
tuttas
unreducible
vomalidine
weak interaction current
western-wear
wrapped hose