查询词典 caudal

On the basis of propulsive model,a mathematical model which is used to describe the motion of pitching and heaving of dolphin's caudal fin by ways of coordinate transformation is deduced.Meanwhile,this model can show the relationship between the motion of caudal fin and parameters related,then the motion of caudal fin of dolphin is simulated by the software of Matlab which showed the swimming principle.

以海豚背腹式摆动推进方程为基础，应用坐标变换的方法，建立了描述海豚尾鳍俯仰－沉浮运动的数学模型，同时建立了描述豚尾各运动参数之间关系的方程，随后运用Matlab的仿真功能再现了海豚在游动过程中尾鳍的运动规律。

The syndrome seems to result from disturbances of the caudal mesoderm before the fourth week of gestation. This includes the caudal cell mass and the cloaca, what explains the associated anomalies of the genitourinary tract (24%) and lower gastrointestinal tract.

本病是妊娠第4周之前尾部中胚层的紊乱所致，包括马尾细胞团和泄殖孔，这解释有24％的病例伴有泌尿生殖道畸形和下胃肠道畸形。

The deformation always appears near the points of the origin of pectoral fin or the origin of dorsal fin to the posterior margin of caudal fin, and is mostly accompanied by flaccidity of caudal fin end.

畸形弯曲位置主要发生在近胸鳍起点处以及背鳍起点至尾鳍末端之间，多伴有尾鳍末端下垂。

Firstly, this dissertation carries out bionic research on the motion of fish body and caudal fin of Thunmiform swimmers in one-dimensional steady swimming for the purpose of establishing kinematic model of underwater propulsor of Thunmiform. This paper also presents the kinematic parameters which describe the motion of fish body and caudal fin, the fundamental approach to getting the propulsion force and the factors related to the propulsion force and efficiency.

首先，从建立仿鲹科加新月形尾鳍推进模式水下推进器运动学模型的目的出发，对采用鲹科加新月形尾鳍推进模式的鱼类在一维稳态游动情况下的身体以及尾鳍的运动进行了仿生学研究，研究了推进运动的基本特征，给出了身体及尾鳍的运动状态、描述其运动的运动学参数、推进力产生的基本途径以及与推进力和推进效率有关的因素，从而为仿鱼水下推进器运动学建模与仿真提供了仿生学基础。

Based on these results, the use of caudal clonidine may be superior to caudal opioids after pediatric ureteral reimplantation.

基于举述结果，小儿输尿管移植术后骶管注射可tilde；？定tilde；？许优于阿片类药。

Move the transducer dorsally to the caudal or end of the retro peritoneal space and find the aorta and caudal vena cava.

把探头从背侧移至尾端，或是向腹膜后腔的末端移动，找寻主动脉与后腔静脉。

It is believable that this model will be useful for the design of caudal fin machine of robot dolphin,and it's also provide a theoretical foundation for dynamics study of caudal fin of dolphin.

该模型可用于定性描述运动参数对海豚推进性能的影响，为进一步研究豚尾动力学提供了理论基础，同时也为机器海豚尾鳍的控制设计提供了理论依据。

Caudal fulcrum V-shaped, spine-like scale at front of caudal fin.

尾部棘状鳞在尾鳍的前面的V形棘状的鳞片。

The simulation study mainly concentrates on the following aspects: the relations of attack angle versus caudal fin motion, the phase difference of heaving and pitching motion of caudal fin motion, swimming velocity and body motion, body wave length and body motion, heaving amplitude and body motion, Strouhal Number and body motion.

具体研究内容包括：最大击水角度对尾鳍运动的影响；尾鳍摆动—平动运动相位差对尾鳍运动的影响；游动速度对鱼体运动的影响；鱼体波波长对鱼体运动的影响；尾鳍后缘最大摆幅对鱼体运动的影响；斯德鲁哈尔数对鱼体运动的影响。

The propulsion force is generated by caudal fin in Thunniform swimmers, and the tendons are the force transmitting elements form the muscles to the caudal fin. As elastic elements, the tendons can save metabolism cost during swimming.

鲹科加新月形尾鳍推进模式的推进力主要由尾鳍产生，肌腱作为连接尾鳍与产生驱动力的肌肉的力传输元件，具有存储弹性应变能的生物弹簧的作用，对降低游动的能量损耗，提高推进效率具有重要作用。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。