The quantity index

• 质量指标

The quantity index的用法和样例：

例句

1. The diameter control is one of the important quality index for spiral welded steel pipes.
   螺旋焊接钢管的直径控制是螺旋焊管生产的重要质量指标之一。
2. Based on the traditional production techniques, the article introduces improved production techniques and production quality index of Zizhong Mustard Tine.
   本文介绍了在传统生产工艺基础之上进行改进了的资中冬尖生产工艺及产品质量指标。