通常说来，年龄是通过生理特征确定的，譬如牙齿或骨骼。
Usually, age is determined by physical characteristics, such as teeth or bones.
因此，自然存在的社群环境能影响幼年雄鼠的形态生理特征发育。
Thus a naturally occurring social environment can influence development of morpho-physiological characteristics of young males.
背景：电生理改变是老化心脏表现的主要特征之一。
BACKGROUND: Electrophysiological change is one of the features of aging heart.
本文简述了赤藓糖醇的物理化学特征、生理代谢特性、生产及应用情况。
The character, production methods and the application of Erythritol are introduced in this paper.
生理信号已经被证明是混沌信号，它具有广泛的非线性动力学特征。
The physiology signal has been proved to be chaos signal by academia.
生理信号已经被证明是混沌信号，它具有广泛的非线性动力学特征。
The physiology signal has been proved to be chaos signal by academia.
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