クォーツ時計
1. Quartz clockA quartz clock is a clock that uses an electronic oscillator that is regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks are at least an order of magnitude more accurate than good mechanical clocks. Generally, some form of digital logic counts the cycles of this signal and provides a numeric time display, usually in units of hours, minutes, and seconds.
Read “Quartz clock” on English Wikipedia
Read “クォーツ時計” on Japanese Wikipedia
Read “Quartz clock” on DBpedia
Read “Quartz clock” on English Wikipedia
Read “クォーツ時計” on Japanese Wikipedia
Read “Quartz clock” on DBpedia
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