魚尾形的 的英文怎麼說
中文拼音 [yúwěixíngde]
魚尾形的
英文
fishtail-
Fish tail caudal fish shapes
魚的尾鰭形狀In spermatogenous cell, we could find dilated cytolemma, dilated nuclear membrane and fused crista of mitochondria. most of the sperm ' s cellular membrane dissolved and broke down into pieces. the central granule and mitochondrion showed little dissolving
久效磷可以使金魚精子細胞質膜溶解,出現間斷性斷裂;有的精子頭部變形,頂部出現凹陷;少量精子頸部中心粒復合體溶解;精子頸部線粒體有溶解現象,精子尾部的膜結構斷裂。Cluster analysis based on rapd showed that at 76 % similarity level, all tested isolated could be clusted into nine groups, i. e. 1 p. ostreatus and p. florida, ii p. ostreatm p. sapidus, p. spodoleucus and p. eryngii, iii p. colnmbinus, p. corlicalus, p. cornucopiae, p. nebrodensis and p. ferulae ; iv p. pulmonarius and p. sajor - caju, v three isolates with indefinite species, vi p. luber - regium, vii p. cilrinopileatus, viii p. djamor and p. salmoneoslramincus, ix p. abalonus and p. cysliodism. 4. a single uniform product 1. 46kb in size resulted from pcr amplification of the 5 " half of the 28s rrna gene for all isolates of pleurolus and the other three genera
隨機擴增多態性dna的聚類分析表明,在76相似水平下,可將供試的側耳菌株聚成九大類,第一大類包括糙皮側耳、佛羅里達側耳;第二大類包括美味側耳、灰白側耳、剌芹側耳;第三大類包括哥倫比亞側耳、裂皮側耳、黃白側耳、阿魏蘑、白阿魏蘑;第四大類包括肺形側耳和鳳尾菇;第五大類為3株未定名的側耳;第六大類僅有具核側耳;第七大類為金頂側耳;第八大類包括紅平菇和桃紅側耳;第九大類包括鮑魚菇和囊蓋側耳。Mer - horse, with the head and forequarters of a horse and the hindquarters and tail of a giant fish ( fb )
生活在海里,上半身是馬,包括馬頭和半截馬身;下半身是魚,體形龐大的半截魚腹和魚尾(神奇動物) 。A mer - horse, with the head and forequarters of a horse and the hindquarters and tail of a giant fish ( fb )
生活在海里,上半身是馬,包括馬頭和半截馬身;下半身是魚,體形龐大的半截魚腹和魚尾(神奇動物) 。The results of the lift interference are given here as a result of a series of rudder of different aspect ration fitted to different location of the fornication. in the second part, the device of open water experiment of ichthyoid rudder is present
提出了一個估算魚形舵定常升力的方法,計算了一系列不同展弦比、不同翼型、不同位置分叉點及尾緣剖分角對魚形舵影響下的升力。Compared to an ordinary rudder, the value of lift coefficient of ichthyoid rudder is about 30 % higher and the maximum rudder angle of it nearly reaches 45 degrees. ichthyoid rudder is a design under such a conception as to effectively utilize the propellers slipstream for rudder action, and featured by having a fish - shaped one - piece construction that is to say - no part of ichthyoid rudder can move in the water
其研究的魚形舵是一個沒有在水下移動的魚尾形剖面單片結構,增加了全舵的剖面拱度,使螺旋槳尾流的折射水量增強,進而增大了水動力的作用,使之比普通流線形舵的升力提高30左右。The study object in this paper is a lunate caudal fin imitating tuna - tail with the mode combined swaying and yawing in uniform flow which is incompressible and inviscid
本文的研究對象是類似於金槍魚尾鰭的一個推進裝置,它是一個月牙形的尾鰭。We have in - house rolling, forging and machining capability to manufacture all types of fishplates including plain, joggled, angle, and combination fishplate to various drawings for various rails
我們有內部的軋輥,鍛造和機床加工這樣的技術,有能力去生產所有類型的魚尾板包括普通魚尾板,嚙合型魚尾板,角形魚尾板和組合型魚尾板根據各種各樣的圖紙為各種各樣的鐵路。Cytochrome b gene compared with characiforms, cypriniforms and salmoniforms ; ( 2 ) the molecular phylogenetic trees suggest that siluriforms form a monophyletic group and have a close relationship with characiforms ; ( 3 ) the families of pangasiidae, claroteidae, ictaluridae, cranoglanididae, schilbidae and clariidae form a monophyletic group in the three molecular phylogenetic trees. the family bagridae branched with schilbidae which comes from china ; the family akysidae branched with amblycipitidae, but the phylogenetic positions of the families siluridae, sisoridae and pimelodidae are not recognised
魚芒科、棘脂?科、叉尾?科、長臀?科、刀鯰科與鬍子鯰科在三種方法構建的分子系統樹中均結合在一起,形成一大單系群; ?科均與來自中國的刀鯰科魚類聚在一起;粒鯰科與鈍頭跪科也均聚在一起;但鯰科、 ?科和油鯰科的系統發育位置不定。Through the fundamental academic research of tunny ’ s swimming mode, the single motor - driven - robot fish has been designed, which has two joints taking pectoral fins as an elevator to make the fish - like robot moving up and down, moreover it can achieve the inertia swerve and the static swerve
通過對?科加新月形尾鰭推進模式魚類的仿生學研究,設計了單電機驅動兩關節聯動的尾鰭推進仿生金槍魚,以胸鰭作為升降舵實現機器魚的上浮和下潛,還可實現慣性前進轉彎和靜止轉彎。On the basis of image segmentation, this thesis mainly discusses the algorithm of automatic target tracking in sequence images on the sea. firstly, in terms of the characteristics of image on the sea, such as weak contrast between target and background, borderline between sky and sea, spoondrift and so on, a method called barycenter tracking which is based on intra - frame information from the sequence images is proposed, in which the threshold method is the key algorithm
在圖象分割演算法研究的基礎上,本文重點從兩方面討論了海上序列圖象中運動目標的自動跟蹤演算法:首先,針對海上圖象的特點,即背景與目標間的弱對比度、存在海天線、魚鱗光和目標拖尾等,設計了以閾值分割為核心的基於幀內信息的形心跟蹤方法。For a long time, fish - like robot always is a research focus on the bionic scientific research field. one of the research branches is fish - like robot that imitates tunny ’ s swimming mode. it has high capabilities of propulsion and high maneuverability
長期以來,仿生機器魚一直是仿生科研領域的一個研究熱點,其中一個研究分支是模仿金槍魚等?科加新月形尾鰭推進模式的仿生機器魚,其特點是能源利用率高,推進速度快,適于長時間、大范圍的水下作業。Railway fixed equipment. sawing and drilling of flat - bottom rails of types superior or equal to 26 kg m, of 60 g, 70 g grooved rails and their fischplates
鐵路固定設備.大於kg m的g g形平底軌及其魚尾板的切割和鉆孔It can be seen that the large yellow croakers " pseudosciaena crocea " richardson cultured in the current - resistence submerged cages have big heads, fine candal peduncles and good body shapes
由此反映了深海抗風浪網箱養出來的大黃魚頭大、尾柄細、體形較傳統網箱養殖大黃魚瘦長。The results of morphological characters showed that p. abalonus and p. cyslidiosus were the same species, as well as p. djamor and p. salmoneostramineus, p. pulmonarius and p. sajor - caju
形態特徵研究表明,鮑魚菇和囊蓋側耳,紅平菇和桃紅側耳、鳳尾菇和肺形側耳分別是一個種的兩個不同名稱。It shows the choice of nature. of course it is almost impossible trying to get the performance only by imitating the shape of fish
結果證明,仿金槍魚的月牙形尾鰭在推進性能上要遠好於簡單的矩形翼,由此,也反映了自然選擇的結果。As the crane is static the mast sections are directly fishplate onto the 4 fixing angles corresponding to the mast type used
由於該起重機是固定式的,其塔節與四根固定角鋼呈魚尾形連接(譯注:即對角線連接) ,而角鋼的形式又與塔身類型相對應。Moreover, it can be used for the ocean observation and life saving. it has very high value of application. this task depends on the national natural science fund on the research foundation of the predecessor, has developed system overall research of fish - like robot
本課題依託國家自然基金項目「仿魚鰭水下推進器的理論與實驗研究」在前人機器魚研究的基礎上,開展了對?科加新月形尾鰭的仿生機器魚的系統總體研究。分享友人