abstraction of heat meaning in English

减热
散热

Sb2014 precise dc low resistance box has its own features such as high working voltage , good abstraction of heat efficiency , stable performance and novel configuration
该电阻箱具有工作电流大、散热效果好、性能可靠、结构新颖等优点，适用于工厂、学校和科研单位作精密大电流低阻值电阻标准。
Sb2016 has its own features such as high working voltage , good abstraction of heat efficiency , stable performance , novel configuration , long working life , convenient operation and can adjust the resistance value under the high voltage
具有工作电压高、散热效果好、性能稳定可靠、结构新颖、操作方便（可在高压下，调节电阻值）、使用寿命长等特点。