Changing volume ratio of the two-chamber muffler can improve the effective noise reduction frequency range of the muffler.

通过改变消声器的两腔容积比，可以改善消声器的有效消声频率范围。

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This setting can be set to a value between 1 and 1000 which will result in a 0.1 percent to 100 percent reduction in frequency.

这个设置可以设置为1到1000之间的值，这会使频率下降百分之0.1到百分之百。

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Flybe say they are not considering a reduction in the number of routes and destinations they fly to, but the frequency of flights from Belfast each day is under review.

BBC: McDonalds creates 100 new jobs as Flybe cuts staff