| opto- |
an abbreviation for optical semiconductor. OPTO devices react to light in some way or another. OPTO devices may switch on when illuminated or generate electric current when illuminated.
출처: www.icknowledge.com/glossary/o.html
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| opto- |
One Person Train Operation. The idea of having a Train Operator on the train with no Conductor.
출처: home.att.net/~alabianca/glossary.html
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