pelvic fin

pelvic fin

美 　英

• na.【鱼】腹鳍
• 网络臀鳍

英汉解释

na.

1. 【鱼】腹鳍

英英解释

n.	1. either of a pair of fins on the lower surface of a fish that have skeletal support and are analogous to the hind limbs of land animals

例句

body covered with ctenoid scale, lateral line absent, two dorsal fins, pelvic fin fused to form elongated suction disc.

体被栉鳞，无侧线，背鳍两个，腹鳍愈合成长吸盘状。

pectoral-pelvic interspace Distance or area between pectoral-fin insertion and pelvic-fin origin.

胸腹鳍间距胸鳍嵌入处与腹鳍起点之间的距离或区域。

Prepelvic length From the base of the anteriormost pelvic fin ray to the anteriormost point on the head (snout or upper lip ).

腹鳍前的长度从腹鳍最前面鳍条的基底到头部（吻部或上唇）最前面的端点。

This faster-moving air provides the pelvic fin with additional lift.

这快速流动的气流为腹鳍提供了额外的升力。