以沉降炉作为燃烧设备来研究不同粒径煤粉燃烧后形成的一次颗粒物的特性。
A sedimentation furnace was employed as a combustion device to study the characteristics of primary particulate matter formed after the burning of pulverized coal of different particulate diameters.
2005年空气质量准则第一次为可吸入颗粒物（PM）确定了一项指导值。
The 2005 AQG set for the first time a guideline value for particulate matter (PM).
本机适用于茶叶、药茶、保健茶等小颗粒物的内外袋一次性包装。
This machine is suitable for dual bag packing for small granular materials, such as tea leaf, medicinal tea and healthy tea.
本机适用于茶叶、药茶、保健茶等小颗粒物的内外袋一次性包装。
This machine is suitable for dual bag packing for small granular materials, such as tea leaf, medicinal tea and healthy tea.
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