attached test coupon是什么意思

用法例句

After solid solution at 980 ℃ for 50 minutes and the following aging at 480 ℃ for 4 hours, the cast-on samples with 0.

86%(质量分数)的产品附铸试样经980℃、50min固溶及480℃×4h时效处理后,可获得良好的综合性能。