frequency tuning
... frequency tripler 频率三倍器 frequency tuning 频率党 frequencymeter 频率计 ...
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党研究者按照月份为基础研究数据的时候发现，显然自杀事件在夏季发生的频率更高，在北部地区尤为如此，因为在北部地区，夏季的天数更多这一特点最为显著。
When they looked at the data on a month by month basis, it became clear that suicides were far more frequent in summer, particularly in the north, where the extended summer days are most pronounced.
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