Particularly, the swimming velocity and thrust generated by undulatory motion of the developed robotic fin are analyzed theoretically. Furthermore, a computational fluid dynamics method is used to show pressure distribution on robotic fin surface as well as the periodical change of generated swimming thrust with time.

重點(diǎn)推導(dǎo)了仿生魚鰭波狀運(yùn)動(dòng)時(shí)理論上能到達(dá)的推進(jìn)速度和產(chǎn)生的推進(jìn)力黄色视频,激情小说,在线视频；并采用數(shù)值仿真給出了波動(dòng)推進(jìn)時(shí)仿生魚鰭表面的壓力分布以及推進(jìn)力隨時(shí)間的周期變化規(guī)律。

Body usually has black spots, caudal fin usually is unspotted, and adipose fin is not black bordered.

組織通常會(huì)有黑點(diǎn)欧美欧美日韩日韩在线综合、尾鰭通常是 unspotted免费公开在线视频97，和脂肪翅不是黑色邊。

The tail fin with two degrees of the robot-fish under the change of heavy load and the influence of characteristic of electromotor will make the distortion of transformation of speed and position synchronously, and bring on anisomerous flaping of the tail fin.

機(jī)器魚多關(guān)節(jié)尾鰭受外界負(fù)載變化及伺服系統(tǒng)機(jī)械結(jié)構(gòu)本身特性的影響會(huì)使速度和位置曲線失真91在线论坛，從而影響機(jī)器魚的推進(jìn)效率国产偷自久久精品久久。

Then the lift and torque models of double wings fin stabilizers flapped lengthways and single wing fin stabilizers flapped breadthwise at zero speed are acquired on the basis of step by step degenerate derivation.

根據(jù)Weis-Fogh機(jī)構(gòu)的組成和結(jié)構(gòu)特點(diǎn)，論文提出了雙翼縱向拍動(dòng)型日韩在线丝袜福利网站大全、單翼縱向拍動(dòng)型和單翼橫向拍動(dòng)型三種類型的零航速減搖鰭黄色网站入口观看。

The experimental result shows, Morpho butterfly's wing micro-structure forms the reflecting rate higher than the reflecting rate of other butterflies, so regard Morpho butterfly as and transfer to the micro-structure of printing, is observed by SEM and transfered to the vein micro-structure printed, demonstrate the same array scale as Morpho butterfly and carinate fin slice, small in more quantity than Morpho butterfly in the slight branch form structure, but metal micro-structure of color and luster printed off to transfer to raise reflect, it is it print off by AFM array carinate fin of alternate size nearly the width of 1.5μm to transfer to measure.

實(shí)驗(yàn)以高解析光學(xué)顯微鏡及紫外光/可見光光譜儀分析虎斑蝶、碧翠鳳蝶久久精品国产品国产精、鋸粉蝶国产精品线免费线观看、摩浮爾蝶蝶翼表面的光學(xué)反射、穿透與吸收特性好紧好深好大乳无码中文字幕，實(shí)驗(yàn)結(jié)果顯示亚洲综合另类校园日韩，轉(zhuǎn)印的Morpho蝶翼微結(jié)構(gòu)與真實(shí)摩浮爾蝶反射率較相近黄色午夜网站，故將Morpho蝶作為轉(zhuǎn)印微結(jié)構(gòu)，由SEM觀察轉(zhuǎn)印的翅脈微結(jié)構(gòu)可以看黄在线观看久，呈現(xiàn)出與Morpho蝶相同的陣列鱗片與脊?fàn)畹啮捚镁妹夥岩患痘粕悠担m細(xì)微的樹枝狀結(jié)構(gòu)少，但轉(zhuǎn)印出的微結(jié)構(gòu)濺鍍20nm的金屬膜提高反射率欧洲真人无码永久在线，而由AFM檢測(cè)轉(zhuǎn)印出陣列脊?fàn)畹啮捚g隔尺寸約為1.5μm的寬度又长又大又硬黄色。

Gymnarchus niloticus,propelled by undulations of a long-based dorsal fin,is a typical representative of median and/or paired fin fishes.

&尼羅河魔鬼&采用長(zhǎng)背鰭波動(dòng)推進(jìn)方式，屬于典型的奇鰭/對(duì)鰭推進(jìn)魚類美日韩免費黄片。

Although the louvered fin geometry of heat exchanger had been proposed in 1950s, the flow and heat transfer characteristics of the louvered fin radiator weren't be analyzed and understood until 1970s.

雖然百葉窗翅片在50 年代就已經(jīng)存在亚洲一区精品黄，但是僅僅在過去的二十年中，人們才開始通過各種手段去了解百葉窗翅片的流動(dòng)現(xiàn)象和流動(dòng)特性a级视频免费播放。

In order to study the geometry effect on the performance of the louvered fin heat exchanger, a two dimensional numerical model is established for air side heat transfer and fluid flow characteristics for a type of louvered fin surface and the related numerical simulation is conducted.

heat transfer and flow characteristics 欧美性爱在线播放久草； numerical simulation ；為研究百葉窗翅片幾何結(jié)構(gòu)對(duì)換熱器性能的影響国产色色色视频网站，采用二維計(jì)算模型亚洲一级av无码毛片精品，對(duì)空氣流經(jīng)一種類型的百葉窗翅片的傳熱和流動(dòng)特性進(jìn)行了數(shù)值模擬，獲得了百葉窗翅片的溫度場(chǎng)美女一级A片免费视频在线观看、速度場(chǎng)和流線圖黄色AⅤ。

Colors below the posterior dorsal rags fin are identical and no black spots on them. The distance from anterior to posterior dorsal fin base (the distance between the two dorsal fins) was relatively short. The base of the two ventral fins united and concaved narrowly.

modestus的主要形態(tài)區(qū)別為：第1背鰭大而高，第1鰭棘呈絲狀延長(zhǎng)插下面的视频，各鰭棘尖明顯伸出鰭膜18岁网站。；第2背鰭各鰭棘中部以下顏色均一，無黑斑日韩综合在线视频；第1背鰭和第2背鰭基部之間間距較芯镁霉酆暇肪镁霉；左右腹鰭基部愈合處凹陷較淺黄视网站。

After analyzing the results, the best processing technique for UHP of degreased yellow-fin tuna is achieved, which is after 30 seconds of the pre-processing, holding it for 15min with the pressure of 350MPa. In this way, the preserving period of the processed degreased yellow-fin tuna is extended to 15 days under normal temperature.

對(duì)檢測(cè)結(jié)果進(jìn)行數(shù)學(xué)分析后，得到了超高壓處理脫脂黃魚的最優(yōu)加工工藝图片区自拍偷拍，為預(yù)處理30s后加壓到350MPa保壓10min成年人视频www，使加工后的脫脂黃魚在常溫條件下的保質(zhì)期達(dá)到了15天。