opaque zone meaning in Chinese
暗区
不透明带
Examples
- Observed in perspective light , wide opaque zones and close translucent zones arrange alternately on sectioned otolith , sectioned dorsal fin spine and vertebra . the joints between the wide zones and close zones are the annulis . 2
在透射光下观察，耳石磨片、背鳍条磨片和脊椎骨上宽的暗带与窄的亮带相间排列，亮带与外接暗带的分界处为年轮。