1) circannual rhythm
周年节律
2) anniversary
周年
3) 50 Anniversary
50周年
1.
Taking mission,Science and technology leading further development and continued forward to create and have future——review and outlook for 50 Anniversary of China Coal Research Institute;
承载使命 科技引领发展 不断超越 创新拥有未来——煤炭科学研究总院50周年回顾与展望
4) annual variation
周年变化
1.
Analyses indicate that although dominated by the seasonal reversing Indian monsoon,yet annual variation of the BOB surface circulation could be divided into three stages with distinctive patterns.
应用1993～2003年TOPEX/Poseidon卫星测高数据结合历史水文资料,反演了孟加拉湾海面动力地形的平均周年变化,探讨了孟加拉湾上层环流季节特征和演变规律。
2.
The study on annual variation of community structure of zooplankton (Copepoda, Cladocera, Rotifer) and the correlation between ecological factors and zooplankton was conducted in Lake Taihu in Jiangsu province from Oct.
本文研究了江苏太湖浮游动物(桡足类、枝角类、轮虫)群落结构的周年变化以及与生态因子的相关关系。
3.
The study on annual variation of community structure of zooplankton and the correlation between ecological factors and zooplankton was conducted in Yeyahu in Beiji.
本文研究了北京野鸭湖浮游动物群落结构的周年变化以及与生态因子的相互关系。
5) annual investigation
周年调查
6) 30th anniversary
30周年
参考词条
补充资料：做周年
1.在人亡故一周年时进行祭奠。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。