The standard is not specified to determine the chemical coposition of the copper alloy. `2 J5 L# ]" S) T! ?
Myi nterpretation: ! L; F1 K# S- j% g3 @/ WTest methods for evaluating phase content of copper alloy used to vessel propeller. ) C6 G L7 X7 q' }' nBut the translation is not accurate for the 相含量(phase content)and 用于(used to )