1) A ventral fin.
腹鳍;臀鳍
2) anal fin
臀鳍
1.
Both adipose and an nal fins were derived from skin,the epidermis of adipose and anal fins were basically the same as theepidermis of teleostean skin,and the developed collagen fiber stratum was equivalent to the stratum subcutaneum of ski.
大鳍鳠臀鳍和脂鳍均是皮肤特化的产物。
3) dorsal/median fin
背鳍/背臀鳍
1.
The undulatory dorsal/median fin propulsion modes as represented by amiiform and balistiform fish are of great significance for bionic propulsion research, particularly for the design and control of underwater vehicles, which are generally employed at slow speeds, offering greater maneuverability and better propulsive efficiency.
以弓鳍目和鳞鲀科鱼类为代表的背鳍/背臀鳍波动推进模式对于水下仿生推进器研制具有相当重要的参考价值。
5) anal spine
臀鳍刺
6) anal fin ray
臀鳍条
补充资料：腹鳍
在飞机机身尾部下面顺气流方向布置的刀状翼片。腹鳍相当于垂直尾翼，侧滑时起增加飞机航向稳定性的作用。腹鳍还可以抵消一部分垂尾侧向力对机身的扭矩，减少机身扭转变形。超音速飞机在高空大迎角飞行中，垂直尾翼受到机翼和机身的"遮蔽"，航向稳定作用严重下降，而腹鳍不受影响，因此超音速歼击机普遍采用腹鳍。常见的有单腹鳍和双腹鳍两种型式。为了避免飞机起飞和着陆时腹鳍碰地，在有的飞机（如米格23歼击机）上，当起落架放下时腹鳍自动折转。腹鳍一般为轻金属结构，当内部布置无线电设备天线时，则用非金属材料制作。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条