它是可冲洗甲板和双导流尾鳍。
不要担心板子的尾部和有多少个尾鳍。
鱼类游动时尾鳍的重要作用是产生推力。
The important role of tail fin of a fish in swimming is to produce a thrust.
流动的一条鱼的尾鳍有助于推动鱼在水中。
The movement of a fish's tail fin helps propel a fish through the water.
这个快速移动的气流向尾鳍提供了额外的升力。
This faster-moving air provides the pelvic fin with additional lift.
这条鱼的尾鳍受伤了。
尾鳍边缘一定要直或是向外弯曲，不能向内弯折。
Caudal edges have to be straight or curving outwards, and not bending inwards.
对尾鳍摆动式水下推进器的设计具有重要的意义。
The experimental results were showed. It has potential benefits to the design of underwater turbine with oscillating caudal fin.
结果表明：浅吃水双尾鳍渔船船型具有良好的耐波性。
The results show that shallow draft twin skeg stern fishing boats have fine seakeeping qualities.
假如失去一整块的斑马鱼尾鳍，但一个星期后就会成长。
If a zebrafish loses a chunk of its tail fin, it'll grow back within a week.
介绍尾型与伴流场之间关系及非对称双尾鳍船型的形成。
The relationship between stern forms and wake fields and the configuration of asymmetrical twin-skeg ship form are described in the paper.
艏摇的存在会明显的衰减尾柄主臂和尾鳍攻角的角位移。
The yawing can apparently attenuate the angular displacement of both the tail and the attack angle of tail fin.
背鳍、脂鳍和尾鳍稍带浅黄色，胸鳍、腹鳍和臀鳍灰白色。
Dorsal fin, tail fin and fat fins slightly yellow, pectoral fin, and ventral fin Tunqi gray.
一个尾鳍，例如有许多不同类型的细胞，是一个很复杂的结构。
A tail fin, for example, has many different types of cells and is a very intricate structure.
超宽浅吃水双尾鳍30万吨级VLCC有着广阔的市场前景。
The future market of the 300,000t twin-skeg type VLCC with super breath and shallow draught is prospective.
虹鳟体侧有从腮盖到尾鳍的红色或粉红条带，正如它们的名字。
Rainbows also have a red or pink streak that runs from the gill cover to the caudal fin, inspiring their name.
不对称尾鳍是安装在单桨船螺旋桨前方艉柱上的一种节能装置。
The asymmetrical skeg is an energy-saving unit which is fixed on the sternpost forward of the propeller on a single screw ship.
青年学生从事真正的机器人设计实验，创建自定义尾鳍的机器鱼。
The young students engage in authentic robot design experiments, creating custom caudal fins for robotic fish.
然而，许多鱼类仍然可以游泳，即使大部分的尾鳍是一个咬伤或切断。
Yet many fish can still swim even if most of the tail fin is a bitten or cut off.
阿克伦号的初步设计按计划完成，与实物仅仅在尾鳍的设计有区别。
The first drawing is of the Akron design as planned. The main difference between it and the final ship as built is the tail fin design.
温特是一只没有尾鳍的海豚，它生活在佛罗里达州清水市的清水海洋馆。
Winter is a tail-less dolphin that lives at the Clearwater Marine Aquarium in Clearwater, Fla.
在成千上百的孔雀鱼品种中，雄鱼最著名的特色就是它们华丽的背鳍和尾鳍。
Among the hundreds of guppy varieties, the best known feature of the male fish is its gorgeous dorsal and caudal fins.
这种转变包括从用前肢划水到身体波动再到尾巴摆动，就像现代鲸鱼的水平尾鳍。
This transition to living in the sea involved changes from paddling with limbs to undulating the body to oscillating a tail, such as the horizontal tail flukes in modern whale species.
最后他们用绳子绑在鲨鱼尾鳍和胸鳍后面，把绳子绑在救援船上，将鲨鱼拖出港口。
Finally they tied ropes to the shark's tail fin and behind its pectoral fin, and attached these ties to the rescue vessel, which towed the shark out through the harbour estuary.
采用多边形建模的方法构建了虚拟微型仿生机器鱼模型，模拟了鱼类尾鳍的摆动。
A virtual robotic fish was built using polygon modeling method and the swing of fish tail was simulated.
自由泳手璞的独特形状和导流尾鳍设计保证手入水时的流线型和向前划水的最大长度。
The Freestyler's unique shape and 'skeg' design forces streamlined hand entry which lengthens each arm stroke.
2005年，它缠在一张捕蟹网的浮标线上，然后就失去了尾鳍，靠着救援人员才活了下来。
In 2005, she lost her tail after getting caught in the buoy line of a crab trap and was forced to rely on her human rescuers to survive.
在整个发育过程中，眼、耳囊、心脏、消化道、肾脏、鳔、胸鳍和尾鳍等得到了优先发育。
The eye sac, ear vesicle, heart, digestive tract, kidney, swim bladder, pectoral and tail fin were developed preferentially.
在整个发育过程中，眼、耳囊、心脏、消化道、肾脏、鳔、胸鳍和尾鳍等得到了优先发育。
The eye sac, ear vesicle, heart, digestive tract, kidney, swim bladder, pectoral and tail fin were developed preferentially.
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