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Conversation quickly spreads droplets inside buildings(图)
Conversation quickly spreads droplets inside buildings
2020/10/10
With implications for the transmission of diseases like the flu, U.S. National Science Foundation-funded researchers have found that ordinary conversation creates a conical 'jetlike' airflow that...
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Water quality could be altered in buildings closed during COVID-19 pandemic(图)
quality altered buildings closed during COVID-19 pandemic
2020/4/29
While restaurants, gyms, schools and other buildings are closed indefinitely to prevent the spread of COVID-19, the quality of water left sitting in pipes could change.In buildings nationwide, water l...