pelvic fin

美 　英

• na.【魚】腹鰭
• 網(wǎng)絡(luò)臀鰭

英漢解釋

na.

1. 【魚】腹鰭

英英解釋

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.

體被櫛鱗，無(wú)側(cè)線，背鰭兩個(gè)，腹鰭愈合成長(zhǎng)吸盤狀。

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

胸腹鰭間距胸鰭嵌入處與腹鰭起點(diǎn)之間的距離或區(qū)域。

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

腹鰭前的長(zhǎng)度從腹鰭最前面鰭條的基底到頭部（吻部或上唇）最前面的端點(diǎn)。

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

這快速流動(dòng)的氣流為腹鰭提供了額外的升力。