[法] 未获专利权的发明

By Jerilyn Watson Broadcast: October 6, 2003 (THEME) VOICE ONE: An office in the United States government has helped protect 1)the property rights of inventors for more than two-hundred years. Its job

发表于:2018-12-07 / 阅读(182) / 评论(0) 分类 VOA2003(下)-美国人文故事

丹尼尔和阿美在观看中国古代的四大发明。丹丹觉得那些都是简单的东西,没有什么意义。其实他们的发明者都是一些很聪明的人。那最后丹丹的观点有没有改变呢? Listen Read Learn May: There are so many people that the tickets are all sold out! Daniel: Luckily we

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Listen Read Learn May: There are so many people that the tickets are all sold out! Daniel: Luckily we got the last two. May: Look, Danny. The Four Great Inventions! Daniel: Gunpowder, compass, the paper making, and the printing. May: I really admire

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Section 38 Inventions They say that the world’s first great invention was the wheel. Perhaps we could argue that the discovery of fire was equally as important. Of course we don’t know who invente

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THIS IS AMERICA - October 14, 2002: Patents and Inventions By George Grow VOICE ONE: An office of the American government has helped to protect the legal rights of inventors for two- hundred years. Th

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学英语单词
akebono
all bounce
Antitrem
backreacted
band head rig saw
Banka tin
basis cranii interna
brasiers
capilla
Cazalla de la Sierra
central motion
Colobraro
coordination complex
croqueting
cusper
cyclical changes
definitive decision
drawing cards
edscopic camera
equal diameter
Eurhinosaurus
Eurya kueichowensis
external cavity modes
falling all over
finite-difference ratio
frame alignment time slot
hadhams
heavy residual stocks
herekes
honourable discharge
humphrey bogarts
huntergatherer
imbricated leaf
induced crystallization
intrinsic equation of curve
jabiru
Kunwi
least-recently-used
lvx
M-N blood group
man-haulage
marketing revolution
mess ... around
micromoduletechnique
mirehs
mixed fuel burning
moneda
most-favoured-nation principle
multilingualize
multiple constraints
no-bake sand
Noire, Mtgnes
NPHA
nude ion gage
Ockhamistic
oggle
oligopsonistic
participation financing
Pauldopia ghorta
peer-groups
philanthropic
pingueculum
plant-pathogenic fungi
plug hats
plum (prunus)
power projection
pressed and sintered pellet
private monopoly
pugmills
quantity of output
rake out information
reduce circumstances
rod scraper
Ryssopterys timoriensis
sectioning alidade
sectorial chim(a)era
short subject
short-landing certificate
shunting team
sinopiss
soil stabilization by freezing
speed regulator electromagnet
spray driy porcine plasma
srilanka
stall sequence
subterranean rumbling
syndrome of deficiency of spleen yin
synesthesialgia
t'be
thiometallate
threadjacker
Three Principles of Washington
tnfs
to break
trostle
Ulicinae
voice input
with patience
word-discrimination
wyplosz
yellow ligament
zig-zag