pectoral fin 中文意思是什麼
pectoral fin
解釋
【魚類】胸鰭。-
Diagnostic characters for the recognition of species include the presence or absence of pectoral fin, the position of dorsal fin origin, gill opening, anus, nostril opening and eye, the cirri present or not, the dentition type, the body coloration, and the head pores or lateral line etc
一般依據胸鰭的有無或發達程度，背鰭起點、鰓孔、肛門、鼻孔和眼等的相對位置，頜的發達程度和頜上是否具須，齒的形狀和排列方式，身體的斑紋，以及頭部和體側的側線孔數目等進行鑒別。 -
Its powerful “ wings ” ( actually pectoral fin flaps ) enable it to burst from the surface of the sea and soar several feet into the air before plummeting back to its natural home, landing with a loud slap
它那有力的「雙翼」 （其實是可以拍動的胸鰭） ，令它得以沖出水面數?高，然後再重重的「啪」一聲落回水面。 -
The measurements used are fork length, head length, upper jaw length, snout length, length of dorsal fin base and anal fin base and the distances from the tip of snout to insertion of dorsal fin, to pectoral fin, to ventral fin and to hard margin of preopercle
此所用於分析之外部非體節形質計有：尾叉長、頭長、上顎長、吻長、眼徑、背鰭基底長、臀鰭基底長以及吻端到前鰓蓋骨后綠、背鰭起點、腹鰭起點、臀鰭起點等11個形質。 -
Based on the " fangsheng - i " robot fish of harbin engineering university auv lab, at first the analysis of the relations of pectoral fin ' s attack angle and lift in vertical plane is done in this paper, using the robot fish ' s hydrodynamic results by the panel method ' s, then setting up the motion model in vertical plane is done. finally animation the robot fish ' s motion in horizontal plane is finished
論文以哈爾濱工程大學軍用智能水下機器人國防重點實驗室的「仿生? 」號仿魚機器人為對象，利用面元法計算的仿魚機器人水動力結果，並分析了垂直面內胸鰭的攻角與升力的關系，建立了垂直面內的模型，根據軸變形模擬了仿魚機器人水平面內的直航和偏航。 -
The test proves that the caudal fin oscillation frequency, the maximum amplitude of vibration of caudal fin, the caudal fin strikes the water angle influence the fish ’ s speed ; the curve experiment has obtained curve radius of inertia advance curve and static curve ; the ups and downs experiment proves that the pectoral fin on different angle influences the fish to move ups and downs
加減速試驗論證了尾鰭擺動頻率、尾鰭后緣最大擺幅以及尾鰭的最大擊水角度對魚體速度的影響;轉彎試驗測得了機器魚慣性前進轉彎和靜止轉彎時的轉彎半徑;在機器魚的升潛試驗中論證了胸鰭不同轉角對升潛運動的影響。
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