鳍

The results indicate that the lift of the zero speed fin stabilizer is relauive to its geometrical size, angular velocity and angular acceleration.

结果表明，零航速减摇鳍的升力与它的几何尺寸、旋转角速度和角加速度有关。

A wide, flat limb, as of a seal, whale, or other aquatic mammal, adapted for swimming.

鳍，海豹、鲸或其它水生哺乳动物的宽而扁的适于游泳的肢

Aquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as ''.

水生食肉型哺乳动物，流线型身体适于游泳，鳍状肢。

Aquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as flippers.

水生食肉型哺乳动物，流线型身体适于游泳，鳍状肢。

Large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales; dolphins; porpoises; narwhals.

大型水生食肉哺乳动物，前肢象鳍、无后肢，包括：；鲸；海豚；鼠海豚；独角鲸。

Other baleen whales are the blue, fin, gray, humpback, and sei whales and the rorqual.

其它的须鲸有蓝鲸、鳍鲸、灰鲸、驼背鲸、鳕鲸和鲸。

The bluefin has proved to be no match for a high-tech fishing industry which has sent their numbers into a precipitous decline.

该蓝鳍金枪鱼已被证明是不符合条件的高科技捕鱼业，这已送出它们的数量到达一个险峻的下降期。

So say Pentagon-backed scientists who have pored over the scales of Polypterus senegalus, also called the Senegal bichir or the dinosaur eel.

由美国国防部赞助，钻研金恐龙（又称塞内加尔多鳍鱼或恐龙鳗）的科学家指出，它们是身型细长的古代遗产。

Japanese vessels are staying sustain ashore to allow the recovery of bigeye and yellowfin tuna stocks, which have declined in part because of the worldwide popularity of sushi.

日本渔船将会停在岸边，让大眼金枪鱼跟黄鳍金枪鱼的数量回升。

Based on the structure of tuna long-line fishing gear and production practice,the author analyzed the vertical moving activity of two tunas: Thunnus obesus, bigeye tuna and Thunnus albacares, yellowfin tuna, and the catching efficiency of hooks of fishing gear.

本文从金枪鱼延绳钓渔具的结构及渔获效果入手，分析了大眼金枪鱼和黄鳍金枪鱼的垂直分布及该延绳钓渔具不同位置钓钩的渔获效率，据以对钓具的性能做出初步评价，并提出了改进的建议。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。