predorsal

基本解释

• adj.[解]背前区的

同根派生

英汉例句

• Predorsal length From the base of the anteriormost dorsal fin ray to the tip of the snout or upper lip.
  背前长从最前面背鳍鳍条基底处到吻尖或上唇前端。
• predorsal Area or distance anterior to first dorsal fin.
  背前的第一背鳍前的区域或距离。
• predorsal ridge A low narrow ridge of skin on the midline of the back anterior to the first dorsal fin base.
  背前脊一个皮肤的低狭窄脊，位于第一背鳍基底前的背部中线上。
• predorsal myomeres A count of the number of myomeres or muscle blocks before the dorsal fin in eel leptocephali. The count includes the myomere under the dorsal fin origin.
  背鳍前的肌分节鳗鱼狭首型幼鱼背鳍前肌分节或肌肉块的数量计数。计数包括背鳍起始点下面的肌分节。
• predorsal scales The row of scales along the midline between the dorsal fin and the back of the skull. In counting, all scales crossing the midline are included.
  背前鳞沿著背鳍与头盖骨背部之间中线的鳞片列。在计算时，横越中线的所有鳞片都被包括在内。