查询词典 dorsal fin

The dorsal fin acts as a keel, giving the dolphin some stability as it swims.

作为龙骨的背鳍，因为它使一些稳定海豚游泳。

The production model included modified engine nacelles, twin main landing gear and a dorsal fin.

生产模式，包括改良发动机舱，双主起落架和背鳍。

His dorsal fin was down and his huge pectorals were spread wide.

它的背鳍下垂，庞大的胸鳍向外展开着。

Dark blue gray on the back and on the upper part of the sides, silvery lower down on the sides, and below; the dorsal fin is plain gray, the rear margin of the pectorals with a very narrow pale edging.

其背上和身体两侧的上部是深蓝色的灰色腹部和身体两侧下面的部分是银色，背面的鳍是灰色，胸鳍后部边缘有很狭窄暗淡的边。

This paper deals with the numerical solution of the Euler equation for airfoils using approximate boundary conditions and the effects dorsal fin on vortex over delta wing at high angles of attack.

本文研究了Euler方程的高效数值方法及背鳍对三角翼大迎角脱体涡的影响问题。

Large deep-water shark with white-tipped dorsal fin; worldwide distribution; most dangerous shark .

生活在深海长有白色背鳍的大鲨鱼；分布于世界各地；最危险的鲨鱼。

Predatory black and white toothed whale with large dorsal fin common in cold seas .

白色食肉型有牙齿和大型鳍的鲸；常见于寒冷的海水中。

Predatory black and white toothed whale with large dorsal fin common in seas .

黑白色食肉型有牙齿和大型鳍的鲸；常见于的海水中。

Predatory black-and-white toothed whale with large dorsal fin; common in cold seas.

黑白色食肉型有牙齿和大型背鳍的鲸；常见于寒冷的海水中。

Anglers and batfishes; spiny-finned marine fishes having pectoral fins at the ends of armlike processes and a long movable spine on the dorsal fin to lure prey to the large mouth.

鮟鱇和圆燕鱼；鳍呈刺状的鱼类，其胸鳍生于一个臂状突出物的顶端，脊骨生于背鳍之上，较长，可移动，用以将猎物吸引至其大嘴边。

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％。