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светоделительное зеркало stresses
el.	beam-splitting mirror
house.	beamsplitter mirror
media.	light splitting mirror
tech.	beam-splitter mirror; beam-splittering mirror; split mirror; splitter mirror
telecom.	color separating mirror

светоделительное зеркало: 2 phrases in 2 subjects

Household appliances	1
Mass media	1