parent metal test specimen

例句：

1. 1. The company's parent metal test specimen was found tobe of high quality.
   该公司的父级金属试验样本被发现质量很高。
2. 2. The newproduct's parent metal test specimen hasbeen tested and passed all the required standards.
   新产品的父级金属试验样本已经测试并通过了所有所需的标准。
3. 3. The manufacturerprovided a detailed parent metal test specimen forthe customer to review.
   制造商为顾客提供了一份详细的父级金属试验样本供其审查。