1. An organism, such as a mammal or bird, having a body temperature that is constant and largely independent of the temperature of its surroundings; an endotherm. 
   恒温动物一种体温恒常且不受外界温度影响的生物体，象哺乳动物或鸟；恒温动物
2. capital construction unit accounting 
   建设单位会计
3. constant speed drive unit 
   恒速传动装置
4. gas particulate filtering unit 
   滤毒通风装置
5. Monetary unit for accounting 
   记帐币制单位

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