KS Q ISO 3951-1-2019 变量检验抽样程序第1部分:按验收质量限（AQL）索引的单质量特性和单AQL逐批检验单抽样计划规范
Sampling procedures for inspection by variables — Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristi