Based on observation and analysis of vorticity the flows field structure of 2-DOF tail fin propellers and the thrust formation reason are studied .

在观测和分析尾鳍流场的基础上，研究了2自由度 尾鳍推进器的流场结构和推力形成原因；

The fish were madly pushing their way upstream to spawn . Modified control of tail fin servo system of robot-fish

鱼群为产卵而疯狂地向上游挤进。基于机器 鱼尾 鳍推进伺服系统的改进控制算法

High stability is the precondition of the high propulsive efficiency for robotic-fish and the steady control of the tail fin is the mail method to increase the stability of the robotic-fish .

高的稳定性是仿生机器鱼高效推进的前提，而对 尾鳍的稳定性控制是实现仿生机器鱼稳定性的主要方法。

The phoenix pattern at the side of beu of drum of Duke Chu has a character of cocking up tail which is different with the pattern with fin tail on Yong bell at the same time .

楚公■钟侧鼓的鸟纹均为翘 尾，与同时期甬钟上流行的 垂尾鸟纹不同。

Research and Design of Robot Fish Tail Fin Propulsion System

仿生机器 鱼尾 鳍推进系统的研究与设计

Tail gate spreader A surfboard fin sliced the crest of a wave .

冲浪板 尾部划破 浪尖。

The apparatus consists of a single board microcomputer propeller type velocity sensor tail fin type flow direction sensor and corresponding interface circuits and software .

该仪器以单极微机为核心，配置旋浆流速传感器、 尾 舵式流向传感器、相应的接口电路和软件。

The results show that : Increasing the mass of fish appropriately and reducing the mass of the fish tail and the caudal fin especially reducing the mass of the caudal fin is contributed to reduce swinging of fish body .

结果表明：适当地增大鱼体的质量，减小 尾 柄 和 尾鳍的质量，尤其是减小尾鳍的质量，有助于抑制鱼体摆动。

Dynamic Characteristic Analyses of Composite Tail Fin of a Missile

导弹复合材料 立 尾的动力特性分析

The tail fin of a Virgin plane appearing in the film is also obscured in BA 's in-flight version .

同样，电影中的一架维京飞机的 尾翼同样在英国航空机舱座位上播放的电影版本中模糊化处理。

Game fish of S California and Mexico having a yellow tail fin .

加利福尼亚和墨西哥水域中长黄色 尾鳍的猎用鱼。

Through the simulation of a case scattering data of a perfect conductor craft had been got . Analysis showed that the wing-body junction intake and tail fin had strong scattering .

通过实例仿真计算，得到了理想导体飞行器目标的散射场数据，分析验证了翼身结合部、进气道及 尾翼等部位为强散射部位。

It has three joint tail a round of propeller fin and a tail training wheels .

它拥有三个关节的 尾部，一对轮桨 鳍和&个尾部辅助轮。

Likewise the animal 's tail fin and flipperlike hind limbs suggest an aquatic lifestyle .

它的 尾鳍与鳍状的后肢也同样显示了水中的生活方式。

So it is an effective measure to restrain the coning motion of large fineness ratio unguided spinning rocket stabilized with tail fin that adopting negative-fixed and negative-spin wrap-around fin .

将卷弧形 尾翼反装且反向旋转是抑制和减小大长径比无控旋转火箭弹锥形运动的有效措施。

Calculational method of the propulsive force and efficiency of tail - fin propulsion based on ideal propeller theory

基于理想推进器理论的尾鳍推力与效率估算柔性 尾鳍推进装置的 水动力计算

While the dynamics of the fish tail fin is widely studied the design of the tail fin propeller lacks a kind of simple valid and estimation method to link the motion parameters of the tail fin with the propulsive force and efficiency .

鱼类 尾鳍的动力学问题已经得到广泛研究，但是在进行尾鳍推进器的设计时，还缺乏一种简单有效的设计和估算方法，将尾鳍的运动参数与推力、效率联系起来；

Ploidy levels of the individuals could be investigated using either muscle or tail fin tissues .

无论用肌肉或 尾鳍组织，皆可检测出其个体的倍性。

The project using mechanism structure to simulate tail fin flapping is finally put forward which is validated by simulation .

提出用机械结构运动模拟机器 鱼尾 鳍拍动的解决方案，并通过仿真进行了验证。

Focusing on solving the problem of swaying propulsion a design of bionic robofish with swaying flexible tail fin is presented .

提出了一种摆动式柔性 尾部的仿生机器 鱼设计方案，着重解决了机器鱼摆动式推进的问题。

Modified control of tail fin servo system of robot-fish

基于机器 鱼尾 鳍推进伺服系统的改进控制算法

The yawing can apparently attenuate the angular displacement of both the tail and the attack angle of tail fin .

艏摇的存在会明显的衰减尾柄主臂和 尾鳍攻角的角位移。

BBC news with Fiona McDonaldBrazilian navy divers have found the tail fin of the Air France plane that disappeared over the Atlantic a week ago .

巴西海军发现一周前在大西洋失事的法航客机 尾翼。

Additionally the movements of the bionic tail fin propulsive system could be optimized by the comparisons of the propulsion efficiency propulsion coefficient lateral force coefficient and torque coefficient at different conditions ( i.e. movement parameters ) .

对不同运动参数下的仿 鱼 尾鳍推进系统的推进效率、推力系数、侧向力系数和力矩系数进行比较分析，得出最优化的 机械尾鳍运动状态。

A Study on the Application of the Compensating Duct on the Twin - Tail Fin Ship

补偿导流管技术应用于双 尾鳍船型的研究

The side force generated by swing of tail fin will influences the propulsive efficiency of robot fish .

由 尾鳍拍动产生侧向力导致的机器鱼的艏 摇能够影响航行器的推进效率。

Coning motion and restrain of large fineness ratio unguided spinning rocket stabilized with tail fin

尾翼稳定大长径比无控旋转火箭弹的锥形运动与抑制

By analyzing the incidental flow of the twin tail fin ship a model test on the compensating duct used on the 3 000 t river sea container ship on the Xijiang River is studied .

在分析双 尾鳍船型尾部伴流场的基础上，采用补偿导流技术对西江3000t级江海直达集装箱船进行模型试验与研究。

Take the two-joint robot fish as the research target the hydrodynamic force models of the fish body and the tail fin of the two-joint robot fish are developed .

选取两关节机器鱼为研究对象，建立了鱼体水动力和 尾鳍水动力的计算模型。