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目前,许多家庭都有语言报时的指针式石英钟。该钟不尽人意的是报时声响普遍偏小,离开两三米后若周围稍有杂声就难以听清。从这类钟的报时电路
At present, many families have pointers quartz clocks that speak the language. The bell is not satisfactory is generally small timing sound, leaving two or three meters if the surrounding noise is a little hard to hear. Timekeeping circuit from this type of clock