纪录片部落--纪录片《[DiscoveryChannel纪录片]恐龙羽毛之谜TheDinosaurFeatherMystery-1080P高清迅雷网盘下载》高清百度云1080p下载
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：恐龙羽毛之谜The Dinosaur Feather Mystery-1080P高清迅雷网盘下载
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科学纪录片???由探索频道（Discovery Channel）于2004年出版-英文旁白Science Documentary published by Discovery Channel in 2004 - English narration
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Microraptor的鼻子到鼻子的尾巴长55-77厘米（1.8-2.5英尺），是已知的最小的恐龙之一。除了极小的体积外，Microraptor也是最早发现羽毛和翅膀的非禽类恐龙之一。除了Xu等人描述的六种gui。等?在2003年，大多数羽毛印象都为人所知。即使在早起的鸟类和有羽毛的恐龙中也是不寻常的，微猛禽是为数不多的已知鸟类的前体之一，它的脚，前臂和手上都会长羽毛。他们的身体上覆盖着厚厚的羽毛，尾巴末端带有菱形扇形（可能在飞行过程中增加了稳定性）。一些标本显示出头部的羽毛呈“峰顶”，类似于一些现代鸟类，例如堆积啄木鸟。一些标本上存在的暗光带可能指示生活中存在的颜色模式。在微型猛禽中发现的几种解剖特征，例如未锯齿的和部分锯齿的牙齿与狭窄的“腰部”以及异常长的上臂骨的组合，均与原始鸟类和原始软骨体共享。At 55-77 cm (1.8-2.5 ft) long from its nose to the tip of its tail, Microraptor was among the smallest known dinosaurs. Aside from its extremely small size, Microraptor was among the first non-avian dinosaurs discovered with the impressions of feathers and wings.Three specimens of M. zhaoianus have been described in detail, in addition to six specimens of M. gui described by Xu et al. in 2003, from which most feather impressions are known. Unusual even among early birds and feathered dinosaurs, Microraptor is one of the few known bird precursors to sport long flight feathers on its feet as well as its forearms and hands. Their bodies had a thick covering of feathers, with a diamond-shaped fan on the end of the tail (possibly for added stability during flight).Some specimens demonstrate a raised feather "crest" on the head, similar to some modern birds, like the Pileated Woodpecker. Bands of dark and light present on some specimens may indicate color patterns present in life. Several anatomical features found in Microraptor, such as a combination of unserrated and partially serrated teeth with constricted 'waists', and unusually long upper arm bones, are shared with both primitive avians and primitive troodontids.
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【技术参数】——
视频编码: Divx 5.21
比特率: 1834 kb/s
Video 分辨率: 640x480
Video 画面比例: 4:3
音频编码: LAME MP3
音频比特率: 256 kb/s
Audio 声道数: 1
分集时长: 46m 37s
分集数: 1
体积: 700mb
发布人： jvt40【Technical Specs】——
Video Codec: Divx 5.21
Video Bitrate: 1834 kb/s
Video Resolution: 640x480
Video Aspect Ratio: 4:3
Audio Codec: LAME MP3
Audio BitRate: 256 kb/s
Audio Channels: 1
RunTime Per Part: 46m 37s
Number Of Parts: 1
Part Size: 700mb
Ripped by jvt40
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