circaprep.大约
circaseptan rhythm近似周节律
Circadian function生理机能
circaannual rhythm近似年节律
circadian quotient昼夜节律商数, 生理节奏系数
circalittoral zone潮周带
Circaea erubescensn.谷蓼
circadian variation昼夜(节律性)摆动
circadian pacemaker昼夜节律起搏点
Circaea glabrescensn.秃梗露珠草
circannual variation年(节律性)变动