Maximum Power Point Tracking(MPPT) method is an important means to improve the system efficiency of PV power generation system.

最大功率点跟踪（MPPT）方法是光伏发电系统中提高系统效率的重要手段。

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When motor carries 30% rated load, the system efficiency may raise about9%.

当电机运行于30%额定负载时，可提高效率9%左右。

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The application adopts module design method, to reduce the coupling, to improve the system efficiency.

应用程序设计采用了模块化设计的方法，减少模块的耦合性，提高了系统的效率。

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The railway companies complain that only 3% of crashes are caused by the sort of human error that PTC is designed to avert and that claims that the system will improve efficiency on the network are unfounded.

ECONOMIST: American railways

He maintained that costs would come down by improving the quality of care and the overall efficiency of the system.

NPR: Obama Presses Anew For Health Care Overhaul

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?