סדק פירות ים עשרים local exhaust ventilation testing טבעת נעל בית אות
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Figure 2.2 from Development of local exhaust ventilation (LEV) system performance test method and guideline for sustainable maintenance | Semantic Scholar
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Figure 2.1 from Development of local exhaust ventilation (LEV) system performance test method and guideline for sustainable maintenance | Semantic Scholar
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