臀鳍 meaning in English
anal fin
Examples
- The unsymmetrical phenomenon of the wave form of dorsal fin undulation is discussed and a description is given on basis of parameterized formulation
分析了“鸳鸯炮弹”背臀鳍的相位关系,揭示了其稳态巡游时背臀鳍波动相位随时间变化的一致性和协同性。 - Typical estimation of kinematic parameters ( cruising speed , wave speed , wave length and frequency ) based on experimental data of the cruising specimens indicates there is significant correlation between cruising speed and other parameters
在实验观测的基础上,根据实验样本的形态及运动规律,建立了背鳍/背臀鳍波动推进模式的运动学方程。 - First , an experimental apparatus for undulatory dorsal / median fin propulsion modes is established . based on morphological and kinematic data of the body and the dorsal / median fins of specimens , the analysis shows that the slender body is well streamlined , symmetrical
本文的实验观测首先建立了背鳍/背臀鳍波动推进研究的生物实验装置,进行仿生对象形态学和运动学观测,提取了仿生对象的形态学和运动学特征。 - The measurements used are fork length , head length , upper jaw length , snout length , length of dorsal fin base and anal fin base and the distances from the tip of snout to insertion of dorsal fin , to pectoral fin , to ventral fin and to hard margin of preopercle
此所用于分析之外部非体节形质计有：尾叉长、头长、上颚长、吻长、眼径、背鳍基底长、臀鳍基底长以及吻端到前鳃盖骨后绿、背鳍起点、腹鳍起点、臀鳍起点等11个形质。 - 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?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。