standard grading

例句：

1. 1. The company's new product line is designed to meet the standards of the industry.
   该公司的新产品线旨在达到行业标准。
2. 2.The teacher used a standard grading system to evaluate the students' work.
   老师使用了一套标准的评分系统来评估学生的作业。
3. 3.The standard grading system has been implemented in all schools across the country.
   全国所有学校都已实施了这套标准评分系统。