1.
Any of a breed of goldfish having a wide, fanlike double tail fin.
扇尾金鱼有宽的扇状双尾鳍的家养金鱼
2.
Design and study on the multiple-bionic UUV with double tail fins
双尾鳍组合仿生UUV的研制及其特性研究
3.
The relationship between stern forms and wake fields and the configuration of asymmetrical twin-skeg ship form are described in the paper.
介绍尾型与伴流场之间关系及非对称双尾鳍船型的形成。
4.
Prophase Study of the Ship Type of 300,000t VLCC with Super Shallow Draught;
超宽浅吃水双尾鳍30万吨超大型油船船型前期开发研究
5.
an anal [dorsal, pectoral, ventral] fin
尾 [背,胸,腹] 鳍
6.
They have body fins and tail fins.
他们有身体鳍和尾巴鳍，
7.
Catamaran-stern Hull s Lines Character and Local Transformation Method Research;
双尾（鳍）船型线特征及局部变形设计方法研究
8.
"It has one dorsal and one anal fin, Both long and Both connected to the rounded tail. "
背鳍和臀鳍各一,形长,均与尾鳍基部相连,尾鳍圆形
9.
fish having greatly elongated front rays on dorsal and anal fins.
背鳍和尾鳍上有很细长的触须的鱼。
10.
The upper and lower fins don't cover the tail or leave a big gap before the tail.
背鳍和腹鳍不包含鱼的尾巴，或者说，和尾巴离开一个很大的空隙。
11.
Research on Flow Field Characteristics of Oscillating Caudal Fin Based on DPIV Technology
基于DPIV技术的摆动尾鳍流场特性研究
12.
Experimental study on hydrodynamic performance of a bio-tail fin propulsive system
仿鱼尾鳍推进系统的水动力性能试验
13.
Likewise, the animal's tail fin and flipperlike hind limbs suggest an aquatic lifestyle.
牠的尾鳍与鳍状的后肢也同样显示了水中的生活方式。
14.
Old World freshwater catfishes having naked skin and a long anal fin more or less merged with the eellike caudal fin.
东半球的淡水鲇鱼，体表无鳞，有类似鳗鱼尾鳍的很长的臀鳍。
15.
any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs.
中生代的几种水生爬行动物，身体象海豚，有背鳍和尾鳍，四肢形如浆。
16.
They are quite an accomplishment in betta form.
巨大、下伸展的尾鳍，完美的背鳍及对称的臀鳍，半月斗鱼绝对是斗鱼型态上的一大成就。
17.
Relating to, having, or being a tail fin in which the upper lobe is larger than the lower and the vertebral column extends into the upper lobe, as in sharks.
歪尾的（有）上片大于下片、脊椎延伸入上片中的尾鳍的，与其有关的，如鲨鱼的鳍
18.
Caudal edges have to be straight or curving outwards, and not bending inwards.
尾鳍边缘一定要直或是向外弯曲，不能向内弯折。