卵球，医学名词，指没有受精的卵。
本文采用两种脑模型：卵球脑模型和球脑模型。
In this paper, we use two head models: ovoid head model and sphere head model.
雌性生殖结构：在某些同节植物中的雌性生殖组织，通常是一个圆形细胞或气囊，包含一个或多个卵球。
A female reproductive structure in certain thallophytes, usually a rounded cell or sac containing one or more oospheres.
通过室内试验和数理统计的方法，研究了光棘球海胆受精卵发育的生物学零度及有效积温。
The biological zero temperature and effective accumulated temperature in sea urchin Strongylocentrous nudus were determined by constant temperature experimentation in a laboratory.
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