Anslyzing energy efficiency of system and comparing conventional energy simply, The author put forward efficiency-cost ratio of project and pre-evaluation of payback time.

对系统能效分析及与常规能源简单对比，提出项目费效比与回收年限预评估。

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These new technologies include not only precision, miniaturization, and net work of weapons, but target recognition, optoelectronic countermeasure, and efficiency-cost ratio of countermeasures, etc.

这些新技术不仅包括精确化、小型化和武器网络化，而且也包括目标识别、光电对抗和对抗效费比等。

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This paper presents the computational method of serial computers, the efficiency of pipeline computers and their performance-cost ratio.

本文讨论了串行计算机的加速计算方法、流水线计算机的效率及其性能价格比。

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Its cost-income ratio, a common measure of efficiency in the industry, is a giddy 78%.

ECONOMIST: Unicredito is the bank's latest rumoured partner

Its cost-income ratio, a standard measure of efficiency, is a flabby 83%.

ECONOMIST: There is no quick way out of the quagmire for Germany's banks