青云翻译

For example, Davis and Bartera (REF.11) and Brumleva (Ref.12) observed from experiments that improvement on the performance of solar water heating systems due to stratification is of the order of 10 percent.

For example, Davis and Bartera （REF.11）and Brumleva(Ref.12) observed from experiments that improvement on the performance of solar water heating systems due to stratification is of the order of 10 percent.

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example, For Davis Bartera (REF11) and Brumleva (Ref12) and observed that improvement from experiments on the performance of solar water heating systems is due to stratification of the Order of 10 percent.

For example, Davis and Bartera （REF.11）and Brumleva(Ref.12) observed from experiments that improvement on the performance of solar water heating systems due to stratification is of the order of 10 percent.