效能测定 meaning in English

potency assay

Solar energy . solar hot water tanks . measurement of thermal performances
太阳能.太阳能热水器.热效能测定
Testing of ion exchangers - determination of the total capacity of anion exchangers
离子交换器试验.阴离子交换器总效能测定
Testing of ion exchangers - determination of the total capacity of cation exchangers
离子交换器试验.阳离子交换器总效能测定