This paper aims to study the X efficiency of bank from the microscopic aspect.

本文主要从微观层面研究银行的X效率。

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The standard study of commercial bank efficiency can be carried out from the following three angles: scale efficiency, scope efficiency and X efficiency.

规范的商业银行效率研究涉及三个方面：规模效率、范围效率和X效率。

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Early scholars paid more attention to the efficiency of scale and scope of efficiency, While recently the scholars pay more attention to the X-efficiency.

早期学者的研究多关注规模效率和范围效率，而近期学者们对X效率给予了更多的关注。

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The engine will be based on the Porsche RS Spyder racing engine that demonstrated its impressive performance and efficiency through multiple Michelin Green X Challenge victories in the American Le Mans Series, the Le Mans Series and the 24 Hours of Le Mans.

ENGADGET: Porsche opens 918 Spyder plug-in supercar pre-orders, $845,000 gets you a ticket to ride

Available with an optional high-resolution full HD display (1920 x 1080), and a separate 10-key keypad, the LIFEBOOK E752 helps businesses reduce costs and improve efficiency.

ENGADGET: Fujitsu outs a trio of similar looking Lifebooks that carry Ivy Bridge over troubled waters