So, we calculate andiicompare the expected profit of three operating models of supply chain.

本文计算了三种运作模式下供应链双方的期望利润。

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Two operating versions of the hour meter and three operating versions of the counter are offered.

两个操作系统版本的电度表和三个版本的操作系统提供的柜台。

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We hired a second world war Catalina seaplane, one of just three operating in the world, and had to bring in a fire-fighting pilot from Canada to fly it.

我们租了一架二战时期的水上飞机（世界上还在使用的三架这类飞机中的一架），我们还必须从加拿大请来一名消防飞行员来驾驶它。

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The first three are still operating, showing the correct time.

VOA: special.2010.07.14

The program has been operating in South Africa for eight years and has reached more than three million people in five of the country's nine provinces.

VOA: standard.2010.07.01

The plans include reducing 18 stations to eight, with just three operating 24 hours a day in Aberdeen, Dover and Solent.

BBC: Brixham Coastguard closure plan worries some in Devon

Tools for building software for all three operating systems are widespread.

FORBES: Magazine Article

The three operating reactors at Fukushima Daiichi melted down after the earthquake and tsunami that struck Japan in March 2011, creating the worst nuclear disaster since Chernobyl in 1986.

CNN: Fukushima tuna study finds minuscule health risks