Wind load is a main variable in OCS design, its right selection is very important for safety operation of OCS and economic efficiency of the system.

风荷载是接触网设计中主要的可变荷载，风速取值的正确与否对接触网的运行安全及系统的经济性至关重要。

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Moreover regulation and efficiency of the economic regulation law have the intrinsic relation and be contained in the economic regulation law system together.

而且经济调制法的调制性与经济性具有内在的联系，共同蕴含于经济调制法的制度中。

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And because they belong to the scope of economic law, a prerequisite for the same relative to the same things with different provisions would cause the loss of system efficiency.

而且由于两者同属于经济法的范畴，具有相对同一的前提条件，对同一事物有不同的规定会造成制度效率损失。

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In market theory the "selfishness" of the economic agent - in this case the GP practice - drives the efficiency of the system by forcing other economic agents to compete to provide the most efficient service.

BBC: Health Bill: Where's the strategic argument?

Numerical targets lead to managed trade, which flies in the face of the free market system, most notably by deviating from the principles of economic efficiency and well-being embodied in the World Trade Organization (WTO) Agreement.

CNN: ASHIMOTO RYUTARO IS THE TOUGH GUY OF JAPANESE TRADE TALKS.

Sound money is good policy, and economic efficiency (including lower taxes and free trade) will do most of the heavy lifting in a free, capitalist system.

FORBES: Magazine Article