By cutting the frequency of flights on many routes, airlines have reduced the number of empty seats.

依靠减少很多航线的出航次数，航空公司成功减少了空位的数量。

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Through collecting vibration signal and analyzing it in the frequency domain in the condition of changing parameter cutting, a single self power spectrum is hard to detect tool breakage effectively.

在变切削参数的加工工况下，通过对振动信号的采集和频域处理，发现采用单一的自功率谱方法难以有效检测出刀片破损。

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This system indicates that the resonance frequency of servo drive in CNC heavy cutting is equal to the lower one of mechanism and speed loop resonance frequency.

通过对五阶系统的分析表明数控强力切削伺服进给系统的谐振频率取决于机械谐振频率和速度环谐振频率中较低的一个。

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In his blog, Mr Fallows has also sought views on whether the council should reduce the frequency of street cleaning and grass cutting to save money, or if such action would be damaging in terms of tourism.

BBC: Communities could run services, Highland Council says