方形龍骨 的英文怎麼說
中文拼音 [fāngxínglónggǔ]
方形龍骨
英文
center bar keel- 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
- 龍 : Ⅰ名詞1 [動物學] （古代傳說中的神異動物） dragon2 （古代巨大的爬行動物） a huge extinct reptile:恐...
- 骨 : 骨名詞1 （骨頭） bone2 （物體內部的支架） framework; skeleton 3 （品質; 氣概） character; spirit ...
- 方形 : square; tetragonum
- 龍骨 : 1 （鳥類的胸骨） a bird s sternum2 [中藥] fossil fragments3 （船隻、飛機、建築物等的支撐和承重結...
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The feathers attached to the arms and the tail evidently possess the structures of " modern feathers ", which consisting of the central shafts ( rachis ) and parallel barbs. dromaeosaurids are unusual group of maniraptoran theropods. they share many similar or the same features with archaeopteryx or other primitive birds, such as : u - shaped furcula, uncinate process, laterally facing glenoid of shoulder girdle, comparatively long forelimb, large semilunate carple, retroverted pubis, ascending process of astragalus, and " modern feathers " with rachis and barbs etc. these facts indicate not only that dromaeosaurids had developed many bird - like characters in course of the advanced maniraptorans toward birds, but also that there seemed to be the co - evolutionary trend between the feathers and the skeletal bones
奔龍類是一類較為特殊的手盜龍類（ maniraptora ） ，它具有許多與始祖鳥archaeopteryx甚至其它早期鳥類相似或接近的特徵，主要表現在：叉骨u形與始祖鳥和孔子鳥類的相同，背肋鉤狀突在孔子鳥類和個別反鳥類中也存在，肩臼窩絕大部分指向側方類似於始祖鳥，肩胛骨與烏喙骨間的夾角非常接近90也和始祖鳥的相似，前肢從比例上講顯得較長，大的半月形腕骨使肘部能向側方折過來，恥骨伸向後下方，距骨上升突與原始鳥類中的為同源結構，羽毛已有顯著的分化且具備了現代羽毛的基本結構等等。With the development of years, the coal trade of heilongjiang province has formed an industry system, which made of many types of coal enterprises, including state - owned important coal enterprises, local state - owned coal enterprises and villages and towns coal enterprises
黑龍江省煤炭行業在過去幾十年的發展過程中形成了以國有重點煤炭為骨幹、地方國有煤礦與鄉鎮集體煤礦多層次並存、多類型煤礦相結合的煤炭工業體系。
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