tightened sampling inspection

例句：

1. 1. The company has tightenedits sampling inspection to ensure product quality.
   该公司已加强抽样检查以确保产品质量。
2. 2. The newpolicy tightens the sampling inspection process,making it more efficient.
   新政策加强了抽样检查流程，使其更加高效。
3. 3. The tightened sampling inspection has improved the accuracy ofthe test results.
   收紧的抽样检查提高了测试结果的准确性。