The standard is not specified to determine the chemical coposition of the copper alloy.& o0 z" L& \1 O7 @
Myi nterpretation:/ l- c0 L) B$ y* `; V, c
Test methods for evaluating phase content of copper alloy used to vessel propeller.3 E3 j2 ]1 r% D1 ~
But the translation is not accurate for the 相含量(phase content)and 用于(used to )