查询词典 dorsal fin

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。

This is a species with parallel-striated scales, a heavily ossified, unserrated, last unbranched dorsal-fin ray, five unbranched dorsal rays in total, and 30–33 lateral line scales.

这是一有水平侧线鳞片的种类，有一重度骨质化，非锯齿状，无分支的背鳍鳍条，总共有5条无分支的背鳍鳍条，和30~33个横向鳞片。

Wakin features in sharp head, no abnormal protrusion of eyes, dorsal fin and open tail fin, so do all the fantails.

头尖，眼正常、不突出，有背鳍，尾鳍为开放型，这是文金的特点，也是贯穿所有文鱼的特点。

I hauled up two fish which I kept: a plump yellow fish spotted in green with a thin dorsal fin and an overbite and a puny blue torpedo-shaped guy with a Chinese junk sail of a top fin.

我抓到两条鱼并把它们拖了上来：一条胖胖的有绿斑点的黄色的鱼，薄背鳍、大板牙，另一条小个子蓝色鱼雷形的家伙，长着横帆一样的背鳍。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。