It actually works so well that we have been able to create a fixed time, fixed price business model.

这的确非常有效，以致我们能够创建一个固定时间、固定价格的业务模型。

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The assumptions for these fluctuating values are fixed in Limits to Growth model, but in reality the assumptions themselves have coevolutionary mechanisms that flux over time.

在“增长的极限”模型中，这些波动数值的假设都是固定的，但是，在现实生活中，这些假设本身就拥有共同进化的机制，会随着时间的变化而变化。

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The flood forecast system in Heilongjiang Province includes 3 parts, model ratio fixed system, real time forecast system and system managements.

黑龙江省洪水预报系统包括模型率定子系统、实时作业预报子系统和系统管理3部分。

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Clinging to a rigid model of fixed working time and presence is better suited to the industrial age than the digital age.

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Second, the input-output model assumes fixed relationships over the time of the forecast horizon.

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In the current model, students have a fixed amount of time to learn new concepts.

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