中世纪暖期

Knights in shining armor, charging each other in great pitched battles, that is the popular view of warfare in the Middle Ages. In reality, most medieval conflicts involved the attacking of castles, a

发表于:2018-12-07 / 阅读(114) / 评论(0) 分类 中世纪攻城战

In the year 1304, Edward Longshanks, more formally known as King Edward I of England, mounted the greatest siege of his reign against the Scots and their castle at Stirling. The attack dragged on. Imp

发表于:2018-12-07 / 阅读(158) / 评论(0) 分类 中世纪攻城战

Trebuchets began in the Far East, in China. But what they were there, were hand-pulled machines, worked by quite large teams of men.

发表于:2018-12-07 / 阅读(113) / 评论(0) 分类 中世纪攻城战

At the end of the 13th century, what was the effective range of an archer, and what was the effective range of a trebuchet. The historical reports differ.

发表于:2018-12-07 / 阅读(131) / 评论(0) 分类 中世纪攻城战

With the manuscript as a starting point, Wayne used a combination of engineering theory and trial and error to come up with a working model.

发表于:2018-12-07 / 阅读(128) / 评论(0) 分类 中世纪攻城战

But the throwing arm will be made from a more light-weight wood - Douglas fir. Wayne calculates that a tree trunk of at least 2 feet in diameter is needed to withstand the stresses of hurling 250-poun

发表于:2018-12-07 / 阅读(124) / 评论(0) 分类 中世纪攻城战

Renaud was left with no alternative but to hope that a couple of planks will be strong enough to splint the weakened throwing arm. Finally work starts on raising the great trestle s. With each passing

发表于:2018-12-07 / 阅读(97) / 评论(0) 分类 中世纪攻城战

Even with 12 timber framers pulling, the firing pin won't budge . It is quite normal that I mean the trigger first is stiff, we found that at home. It takes a lot of efforts which is as well as in som

发表于:2018-12-07 / 阅读(107) / 评论(0) 分类 中世纪攻城战

[全屏观看] 点击右键- 另存为 可保存这个Flash影片

发表于:2018-12-10 / 阅读(173) / 评论(0) 分类 大学六级6000单词速记动画版

US Restaurant Serves Medieval Art of Fighting European martial arts, unlike popular Asian martial arts, are not widely practiced and are unknown to most people. But, a restaurant near Washington is the center of an effort to make the ancient fighting

发表于:2018-12-16 / 阅读(112) / 评论(0) 分类 2015年VOA慢速英语(四)月

...one, fire in the hole! Oh, yeah. Renaud’s optimism is justified. The missile falls just a few yards short of the wall and a bit to the right. The team decides to give it one more day. But the nex

发表于:2019-01-02 / 阅读(190) / 评论(0) 分类 中世纪攻城战

Well it's gonna fit. Some point is gonna found. We're off the ground here. After last night's narrow miss,Wayne's trebuchet is repositioned to be more in line with the target. All we're doing is shift

发表于:2019-01-02 / 阅读(147) / 评论(0) 分类 中世纪攻城战

Come and take a look at the rocks over here. It just pulverize d the stone on the inside. It confirmed what we came here to prove, didn't it? We had a lovely hit smacking in the middle and it smashed

发表于:2019-01-02 / 阅读(168) / 评论(0) 分类 中世纪攻城战

In terms of the kind of dialogue that existed between attack and defense, it is very clear now to me that the appearance of trebuchet on the scene shifted that balance radically in favor of attack. It

发表于:2019-01-02 / 阅读(170) / 评论(0) 分类 中世纪攻城战

Rachel Smalley | London 21 December 2009 One of the exhibits at the Victoria and Albert Museum London's Victoria and Albert Museum claims to be the world's greatest museum of art and design. With artifacts dating back 3000 years, it has a collection

发表于:2019-01-13 / 阅读(170) / 评论(0) 分类 VOA标准英语2009年(十二月)

Scientists Ponder 'Epoch' of Damage to Global Water System Scientists say a new geologic epoch has begun whereby humans are causing major damage to global water systems. They warn of a planetary transformation comparable to the retreat of the glacier

发表于:2019-01-14 / 阅读(89) / 评论(0) 分类 VOA标准英语2013年(五月)

The Arctic wasn't always covered in ice. Samples of settlement layer beneath the frozen lake show this region used to be a lot warmer and made by out in the future. The works in the general science. * gain a Russian lake 100 kilometers north of the A

发表于:2019-01-20 / 阅读(77) / 评论(0) 分类 Scientific American(五)月

By Liu Enming New York 03 December 2007 New York City's Manhattan can at times seem all business and flashy pleasure, a burgeoning island of skyscrapers and fast-paced modern life. But there are hidden treasures of history and tranquility awaiting qu

发表于:2019-02-04 / 阅读(146) / 评论(0) 分类 VOA常速英语2007年(十二月)

Ambition 抱负 It is not difficult to imagine a world short of ambition. It would probably be a kinder world: with out demands, without abrasions, without disappointments. People would have time for reflection. Such work as they did would not be for

发表于:2019-02-20 / 阅读(110) / 评论(0) 分类 阅读空间

ARI SHAPIRO, HOST: Centuries ago in the Middle Ages, religious scribes labored over lavishly illustrated books. Most of these illuminated manuscripts were made by anonymous artists. Now scientists say they have a new kind of evidence that could revea

发表于:2019-03-04 / 阅读(192) / 评论(0) 分类 2019年NPR美国国家公共电台1月
学英语单词
5'-iododeoxyuridine
a bargain is a bargain
accuracy of operation
actisomide
among which
amphr., amp-hr
amplitude modulation type ultrasonic diagnostic equipment
anthosperm
anticorrosive varnish
at the caprice of
axiom of sum-set
Aythya affinis
bazirite
beef olive
begonia cathagana hemsl.
besigomsin
bethe-weizs?cker cycle
building time
bulk freight container
Cardiomyomectomy
clean bed
coffee-cup
computer name
conclude a peace treaty
control of weeds in narrow-row soybean
Crookes's space
cymbidium actum ridl.
digimatic
dinner sets
diplodocine
electronic paramagnet resonance(EPR)
energy level diagram
entailed
ESCD
excess deficit
fancy one's chances
fielding team
fire retardant adhesive
froise
genus carissas
get the fag end
green sky
Hamathite
have one's eye s on the ball
high mass
Hill problem
holoblastic egg
inhibiters
isolation joint
jointing of tubes with tubesheet
keddahs
ktunaxa
lakme
lift one's face
literature review
make good his retreat
map design
marmalize
medicago minima lam.
MQFP
Najdi
network interconnected
noise-producing material
nonfoveal
npfl
Paracortol
penis locking sensation
perthitization
PHALLOSTETHOIDEA
phosphate comparator
pineapple jelly
pinky swearing
pit-pair
poconos
primitive choana
product owners
profit amount
quent
reverse engine
robinson jefferss
rotating ring
saturation of pole
set shots
smei-
Spanish
sprayed metal
steady-state characteristics
stratostat
Symphyocladia
three-islander
transmission-line current
tribalism
turkey reds
uk edition
universal asynchronous port
water-baseds
wholesale business
wooden wheel
ws_ftp
yhalwed
Zāwiyat Qirza