Fish could be sighted finning near the surface.

我们可以看到鱼把鳍露出水面。

I finned madly for the surface.

我拼命划动脚蹼想要浮出水面。

An automatic radiusing machine was developed to eliminate the burr or edge fin of bar end.

为了清除棒材在生产过程中产生的端部毛刺、缺陷,研制开发了棒材自动倒角机。

It uses its pectoral-fin spines as anchors to prevent jackknifing as its body musculature produces snakelike movements.

步行以胸鳍棘为锚，在身体产生蛇形动作时防止弯折。

The mainstructure parameters of spirally grooved tube are diameter of tube, fin pitch,corrugation depth, wall thickness, spirally angle and spira.

螺旋槽管(亦称螺纹管)是其中的一个重要分支,它是一种优良的高效异形强化传热管件。

Most fishes have unstriated rays along the anterior part of the dorsal and ventral edges (leading edges) of the caudal fin.

在大多数鱼类的尾鳍，沿著背与腹缘的前部具有无条痕的鳍条。在一些鱼中，例如鰕虎鱼其有条痕的与无条纹的软条数量比在鑑定上是有帮助的。

Preliminary analysis shows that the propulsion force is relative to serval factors, such as liquid viscousness, drive fin wet area and offset, etc.

分析表明,鱼形微机器人推进力与流体的粘性系数、摆翼面积和偏移角因素有关。

Approximately thirteen seconds before impact, the Copperhead's laser light sensor becomes active, and it uses fins to guide itself to the laser light source.

在地前大约13秒时铜斑蛇的激光传感器启动，利用直尾翅制导攻击激光照射目标。

You owe me a fin.

你欠我美金五元。

Studies on heat exchanger aluminum fin precoat of air conditioner were reviewed. Six types of precoat as well as the application of hydrophilic precoat were described.

回顾了空调机热交换器预涂层铝散热片的研究概况，介绍了6种类型预涂层散热片材料的基本情况以及亲水性预涂膜散热片的应用效果。提出了该课题今后的研究方向。

The male shows elongated rays in its anal fin and yellow pearl organs on the jaws and opercula during breeding season.

雄鱼的臀鳍鳍条特长，交配季节两颌和鳃盖会长出黄色的珠星。

The lively and recognizable Tiger barb should never be kept with long-finned species, such as angelfish, gouramis, or Veiltail hybrids as they like to nibble at their fins!

不应将活跃而显眼的虎皮鱼与鱼鳍长的鱼种放在一起饲养，那些鱼种例如有神仙鱼、足鱼或纱罗尾杂交鱼-这是因为虎皮鱼喜欢啃咬它们的鱼鳍！

Based on analysis three general method for reducing roll: Bilge keel, anti-rolling, antiroll fins, prospect a few new method for reducing roll.

并且本文在比较其他减摇装置的基础上,展望了一些新型的减摇装置。