[电] coefficient of performance of a thermolelectric cooling couple

rè diàn ǒu lěng què xìng néng xì shù ㄖㄜˋ ㄉㄧㄢˋ ㄡˇ ㄌㄥˇ ㄑㄩㄝˋ ㄒㄧㄥˋ ㄋㄥˊ ㄒㄧˋ ㄕㄨˋ