PA has the good anti-homoiothermy, anti-weary and changes the strength, the anticreep, and the good wearability, bears the chemical agent.

PA具有良好抗恒温、抗疲劳和应力、抗蠕变、及较磨损、化学剂。

The Parental Care Model hypothesizes that endothermy is arisen as a consequence of selection for parental care because endothermy enables a parent to control incubation temperature.

行为模型是指在鸟兽类中，内温是对行为选择结果，因为内温为控制抚育温度提供了保证。