But so is hard economics: low installation and Labour costs, clean power delivery at peak midday hours and a hedge against fuel-price volatility.

对于理性的经济而言也是如此：安装费用低，人力资源消耗低，在中午用电高峰期输送清洁能源以及可以抵御波动的石油价格。

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In experiments of varied conditions, it is found that volatility of fuel and characteristics of water mist determine the degree of fire intensification.

通过改变燃料种类、喷头雾特性参数等实验工况发现火焰强化程度主要决定于燃料的挥发性以及雾滴的直径、速度等参数。

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Ultimately, businesses that adapt to the volatility of fuel prices and take advantage of the fast flow of market information are able to gain an advantage.

FORBES: Higher Gas Prices Here To Stay, But Fuel Price Volatility Can Be Tamed

John McConomy, who runs PricewaterhouseCoopers' U.S. power and utilities practice, sees a likelihood of a lot more deals like these, although he cautions that the volatility of fuel prices and the involvement of newly invigorated regulators will stymie some plans.

FORBES: Magazine Article

The industry has struggled for years with big bankruptcies, terrorism, labor unrest and fuel cost volatility.

FORBES: Why Industry Consolidations Like the American Airlines and US Airways Merger Are Not Just for Big Companies