双倍试件-双倍轭铁法的英文

double-bar-and yoke method

• 双倍:    gemination; double
• 试:    try; test
• 件:    piece; article; it ...
• 双:    two; twin; both; d ...
• 倍:    times
• 轭铁:    yoke; heel piece; ...
• 法:    law