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单词
photoelectric relay
释义
photoelectric relay
photoelectric relay
[
¦fōd·ō·i′lek·trik ′rē‚lā
]
(electronics)
A relay combined with a phototube and amplifier, arranged so changes in incident light on the phototube make the relay contacts open or close. Also known as light relay.
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one vale fan
one-valued function
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one variable query processor
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on even keel
one version
one versus one
on every corner
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更新时间:2026/1/16 5:05:53