In this paper, a mathematical model is used to characterize this random signals, and a time averaging method is used for obtaining the ultrasonic attenuation coefficient.

本文提供了一种用于识别这类随机信号的数学统计模型，并介绍了一种时间平均法用来获取超声背散射信号的衰减系数。

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The test program calls each method repeatedly with a large loop count, averaging the time measurements over several calls.

测试程序重复调用每种方法，使用一个大循环数，从而平均多次调用的时间衡量结果。

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If a 2% goal was meant to be a cap on inflation, then policy would result in inflation averaging below 2% over time.

如果2%的目标意味着通胀率的上限，那么决策就会使得随着时间推移，通胀率的平均值低于2%。

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The show is the most-watched comedy in prime time averaging 15.2 million viewers.

FORBES: Sorry, Charlie, CBS Doesn't Really Need Two And A Half Men

As Forbes Dorothy Pomerantz reported last week, the show is the most-watched comedy in prime time averaging 15.2 million viewers.

FORBES: Charlie Sheen Hits Today Show, Demands 50% Raise From CBS

For real-time applications, averaging hundreds of readings simply won't work.

ECONOMIST: MONITOR