Friedman's pricing formula takes into account square footage, cleaning frequency, and "population density."

Friedman的服务价格将面积，频率，甚至“人口密度”都计算在内。

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On condition that the water production is ensured, optimal cleaning frequency and minimum cleaning cost could be obtained by choosing the appropriate cleaning strategy and time.

在保证产水量的情况下， 选择恰当的清洗策略和清洗时机可使清洗次数最合理， 清洗费用最低。

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This means that the Settings for frequency and duration should ensure there is no overlap between a cleaning procedure's finish time with another one's start time.

这意味着频率和持续时间的设置应该确保一个清理过程的结束时间和另一个清理过程的启动时间之间没有重叠。

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The frequency of cleaning, particularly of door handles, has been stepped up.

FORBES: Market Scan

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

"One of the best features in Dolby TrueHD with advanced 96k upsampling is the apodizing filter, which makes remarkable improvement in the articulation in high-frequency attacks while simultaneously cleaning up midrange mush, " said Brant Biles, President and Chief Engineer, Mi Casa Multimedia.

ENGADGET: Dolby ups TrueHD lossless audio on Blu-ray to 96k, says every upsampled bit is amazing (video)