查询词典 dorsal fin

The Fuzzy-PID controller of fin stabilizer was designed based on fuzzy control and PID control theory. The controller of Fin Stabilizer is designed which uses roll angle and angular velocity of roll angel as input and fin angel as output. The model of ship is built based on Conolly theory. The controller is simulated using MATLAB. Results shows that compared with conventional PID controller, the FUZZY-PID controller has better effect.

设计了基于模糊控制和PID控制理论的FUZZY-PID复合控制减摇鳍控制系统，以横摇角和横摇角速度为输入量，鳍角为输出量，基于Conolly理论建立了船舶模型，利用MATLAB针对不同海情对控制器进行了仿真，结果表明减摇鳍模糊控制器动态响应性能和稳态控制精度均十分理想，能够满足减摇鳍控制系统的控制要求。

Anal fin origin opposite that of second dorsal fin.

第二背鳍鳍的那对面的臀鳍起源。

The dorsal fin is the vertical fin on the back of a fish and certain marine mammals.

背鳍就是在鱼或者某些海洋哺乳动物背上的垂直鳍。

Of,relating to,or being the marine teleost fishes of the order Pediculati,characterized by pectoral fin s extending from an armlike process and a dorsal fin ray that serves as a lure for prey.

柄鳍目鱼的属于、有关或是柄鳍目硬骨海鱼的，以从臂状突起延伸而成的腹鳍为特征且其背鳍骨可作捕杀猎物的诱饵之用

Behind the dorsal fin , rainbows have an adipose fin that is commonly clipped from fish raised in a hatchery.

虹鳟和刚头常出现在溶氧充沛的湖泊或溪流中，这些地方夏季的水温通常不超过12°C ，在虹鳟背鳍的后面有一个脂肪鳍，人工孵育放流的鱼通常会把它剪掉。

Swimming upright body, dorsal fin and pectoral fin swinging, swimming forward.

游泳时直立身体，摆动背鳍和胸鳍，游泳前进。

The leafy sea dragon propels itself by means of a pectoral fin on the ridge of its neck and a dorsal fin on its back closer to the tail end.

海龙的叶菜驱使一个手段本身的胸鳍上一脊其颈部和背鳍的背部接近尾声。

Diagnostic characters for the recognition of species include the presence or absence of pectoral fin, the position of dorsal fin origin, gill opening, anus, nostril opening and eye, the cirri present or not, the dentition type, the body coloration, and th

一般依据胸鳍的有无或发达程度，背鳍起点、鳃孔、肛门、鼻孔和眼等的相对位置，颌的发达程度和颌上是否具须，齿的形状和排列方式，身体的斑纹，以及头部和体侧的侧线孔数目等进行鉴别。

The typical symptoms of the fulminant hemorrhage tilapia in Hainan are as follows: congestion and hemorrhage in skin and muscle, congestion in the pterygiophore and decay in the end of dorsal fin and caudal fin, congestion and swelling in spleen, enlargement in gallbladder, rubefaction and congestion in liver, congestion and hemorrhage in abdominal wall and intestinal wall.

海南地区暴发的罗非鱼出血症的典型症状为：皮肤和肌肉大面积充血、出血，背鳍和尾鳍鳍条末端腐烂、鳍条充血，肝脏充血发红，脾脏充血、肿大，胆囊肿大，腹腔壁和肠壁都有不同程度的充血或出血。

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

&尼罗河魔鬼&采用长背鳍波动推进方式，属于典型的奇鳍/对鳍推进鱼类。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。