- coniologyn. 空气中的灰尘,微尘学
- dustdust n. 烟灰；烟道灰；炉顶灰
dust filter 滤尘器；尘土过滤器
dust content 尘含量；含尘率
dust particle 尘粒；微尘
dust and ashes 尘土
- dusting器
dust content 尘含量；含尘率
dust particle 尘粒；微尘
dust and ashes 尘土和炉灰；令人失望的事物
dust bowl 风沙侵蚀区
- koniologyn. 空气中的灰尘,微尘学
- particleanalyzer 粒度分析仪，粒度分析器；颗粒大小分析仪
particle counter 粒子计数器；粒子计数管；颗粒测量计数器
dust particle 尘粒；微尘
average particle
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