衍射极限直径

The Moon 月球 We find that the moon is about 239,000 miles (384,551 km) away from the earth, and, to within a few thousand miles, its distance always remains the same. Yet a very little observation

发表于:2018-12-05 / 阅读(54) / 评论(0) 分类 有声英文阅读

Sand 沙子 If you look around you, you can find sand very easily. 你若环顾四周,就很容易发现沙子。 Sand comes from rocks. 沙子源自岩石。 Each grain of sand is less than 2 millimeters in diameter. 每粒沙子的直径小于两毫

发表于:2019-01-10 / 阅读(53) / 评论(0) 分类 与美国小学生一起学英文第5册

In the storeroom 在库房 A:Where can I find a spare hose for the pump? A:我在哪里可以找到一跟备用的机泵软管? B:What size do you need? B:你需要什么型号的? A: 25 mm diameter. A:直径25毫米的。 B:They're at the back o

发表于:2019-01-14 / 阅读(57) / 评论(0) 分类 职业技术英语口语

A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A: Oh, yes. I like that one. But it's too heavy. B: Okay, try this one. It's made of aluminum. A: O

发表于:2019-01-20 / 阅读(92) / 评论(0) 分类 购物英语对话

A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A:I like that one, but it's too heavy. B: Okay, try this one. It's made of aluminum. A: This is muc

发表于:2019-01-21 / 阅读(54) / 评论(0) 分类 购物-Shopping

Tree climbing: Part 2 NB: This is not an accurate word-for-word transcript Dan: Hello and welcome to this weeks 6 Minute English. Im Dan Walker Smith and today, for the second part of our tree climbing programme(节目,计划), Im joined by Kate.

发表于:2019-02-05 / 阅读(71) / 评论(0) 分类 六分钟英语
学英语单词
Acctg.
axial-flow reactor
be in correspondence with
benzene carboximidamide
bhagavati (india)
blastmycin
boiler cross brace
breakdown minimum
breeding performance of the reactor performance
CALABARZON
carapanaubine
cell harvester
chain-gangs
coherent significant instants
coil ignition
continuous parameter Markov chain
core construction
cost forecast
county courthouse
degree of zero
demand driven
detesteth
distributed communication processor
eligible bank
emission spectrometry
examination of witness
exultative
frozen concentrated milk
genus Macrozamia
govern
hair scale
handling event function
high-angle normal faulting
holometabolous metamorphosis
housefly eggs
idesia polycarpa var.vestita diels
inclusive interaction
interior live oaks
intermarries
isothermal line
Jersey Giant
jet pump discharge
kadomatsu
karisma
Kirchhoff's diffraction formula
ladder rail
lameoid
lateral floating boom
Leishmania
leisurely
lemn site
Loungsbury
lovelore
low-currency dumping
Lyleton
main junction box
manual cranking
many-world theory
melanite (titanian andradite)
menthacamphor
meteorological experiment
myotis
net term
orbicular
osteoectasia
overshirts
page boy
pitsea
plastic scintillator detector
plastics machinery
porphyromycin
Port Macdonnell
potentially unwanted program
preemie
protogospels
ptyalagogues
Reader's Block
Schwarzwald
seismic spread
selectivity order
sidwillite
sky wave
Smilax cocculoides
spearsmen
spindle nut
stencil bit
Steroxin
swap fund
taxuss
Teminabuan
temporization
tendinous arch of pelvic fascia
time-marker
trolley bush
turkey stuffings
unavailable moisture
unlimited hydroplane
unsmoothing
Urukthapel
voltage turn ratio
yokosukaite (nsutite)
zephyr cloth