The effective method to improve the system economy is proposed under the preconditions to meet the power demand.

分析了在满足动力性要求的前提下，提高系统经济性的有效途径。

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Making good use of electric power cost between on-peak and off-peak, heating system economy of running is enhanced.

充分利用峰谷电时段的电价结构，提高了供热系统的运行经济性。

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With the enlargement of power system scale, power system economy has gained remarkable improvement. At the same time, the ability of resisting disturbance is weakened.

随着电力系统规模的不断扩大，电力系统经济性得到了显著提高，但同时也削弱了系统抗大扰动的能力。

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Yet,every day,Americans depend on their transportation system to keep them, and the largest economy in the world, on the move.

VOA: special.2010.01.11

Now it's different in important ways because it's really focused at preventing the collapse of the economy that is created by a financial system failure.

现在，这个不同有很重要的意义,因为它真正专注于,阻止被金融系统的失败而引发的,经济的崩溃。

耶鲁公开课 - 金融市场课程节选

In an effort to get more to keep the economy from collapsing at a time when at a time of great concern about the structure of the financial system.

在一种得到更多的努力中,预防经济在一种时期中崩溃，这个时期是,人们都很担忧,金融系统的结构。

耶鲁公开课 - 金融市场课程节选

When share prices collapse, the financial system and economy as a whole are at risk.

ECONOMIST: Central banks, all a-quiver | The

Bernanke said that "at this point, " he sees no major risks to the U.S. financial system or economy.

NPR: Fed Stands By Stimulus, Sees Stronger US Economy

Let's capitalize on it and get the modern immigration system our economy deserves.

CNN: U.S. needs 21st century immigration plan