Through the analysis of the definition of the rigidity of the information system, a metric index of the rigidity of the information system is given on the perspective of the cost at last.

最后通过对信息系统刚性的定义进行分析，从成本的角度给出了过程变化下信息系统刚性的度量指标。

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The commonly used systems in the world are the Metric System, the British System and the U. S. System.

目前国际上通用的度量衡制度有米制、英制和美制。

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An expanded and modified version of the metric system, the International system addresses the needs of modern science for additional and more accurate units of measurement.

公制的扩大和修改版本，即国际制度针对了现代科学附加的及更加正确的度量单位的需要。

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While many countries mandate the use of the metric system by law, the U.S. Congress has repeatedly passed laws that encourage voluntary adoption of the metric system.

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Unlike the metric system, however, the new standard is not clearly any better than the old.

ECONOMIST: Double standards

Americans today are just as ignorant of the metric system as they were 15 years ago except pot-smokers.

ECONOMIST: Legalising drugs