Two mathematic methods are presented to prove that 2-parameter hyperbolic model and exponential model are the superior limit and lower limit of the corresponding new 3-parameter model respectively.

采用2种方法证明了初始导数、极限值对应相等的情况下，指数曲线模型、2参数双曲线模型分别是3参数模型的上界、下界；

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It is meanwhile good practice to limit performance metrics to as few as possible, and the carbon footprint does not belong on the list when far superior techniques are available.

与此同时把性能指标限值限制得尽可能小也是很好的举措，并且当高科技有效的时候，碳排放量并不在列单上。

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If the diesel engine has a superior economic performance, a dependable work, and if the noise and the vibration can be controlled in a lower limit, which usually depends upon its valve train system.

一台柴油机的经济性能是否优越，工作是否可靠，噪音与振动能否控制在较低的限度，常常与其配气机构的设计是否合理有密切关系。

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They asserted with increasing self confidence that their system was superior: societies that accepted strong, even authoritarian governments and were willing to limit individual liberties in the interest of the common good, take charge of their economics, and sacrifice short-run consumer interests for the sake of long-run growth would eventually outperform the increasingly chaotic societies of the West.

FORBES: A Cautionary Fable