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электровакуумный фотоэлемент

强调
技术 photoelectric tube; photoemissive cell; vacuum phototube; phototube
电子产品 electric eye; emission cell; high-vacuum phototube; light-sensitive tube; photocell; photoelectric cell; photosensitive tube; vacuum photocell
自动化设备 emission photocell
马卡罗夫 photoelectric valve; photoemissive device; photoemissive diode; photovalve; vacuum phototube
электровакуумный фотоэлемент
: 5 短语, 3 学科
电子产品3
计量学1
马卡罗夫1