| 摘要 |
FIELD: investigating or analyzing materials. ^ SUBSTANCE: individual impactor comprises housing with nozzle, collector plates, and inclined filter (or stack of filters). The inner chambers defined by the housing and collector plates of different thickness are provided with rounded surfaces that allow turbulence of the air flow to be suppressed. The sizes of the collector plates do not exceed the sizes of the holder of the standard radiometric instruments. ^ EFFECT: simplified structure. ^ 2 cl, 5 dwg, 2 tbl, 2 ex |
