标准摘要
[中文适用范围]： 本文件定义了由亚利桑那州沙漠沙制成的五个等级的测试粉尘的粒径分布和化学含量限制。 [外文原描述]： This document defines particle size distribution and chemical content limits involving five grades of test dust made from Arizona desert sand.
英文名称Road vehicles — Test contaminants for filter evaluation — Part 1: Arizona test dust