VacuumCleanerDust/Dirt(#20sieve/833micron)100.0g真空吸尘器用尘土（#20筛网/833微米）VacuumCleanerDust/Dirt(#50sieve/297micron)100.0g真空吸尘器用尘土（#50筛网/297微米）VacuumCleanerDust/Dirt(#200sieve/75micron)100.0g真空吸尘器用尘土（#200筛网/75微米）)