This paper reviews the fundamental principle of the field variables model and recent progress in the field of materials science and engineering.

本文详细介绍了场变量模型的基本原理及其在材料科学与工程各领域应用的最新进展。

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One of the field variables is considered as a function of other variables and time, and the fundamental partial differential equation for the function is established.

将一个场变量取作为其余场变量和时间的函数并对这个函数建立基本偏微方程。

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I suspect that some experts in the field will be keen to address alternative explanations, such as unassessed variables playing a role in the wellbeing decline.

我怀疑该领域的一些专家会热衷于寻找其他解释，比如未评估的变量在幸福感下降中发挥的作用。

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The real challenge is figuring out whether a particular storm or flood was due to climate change or natural variables, said Chris Field, founding director of the Carnegie Institution's Department of Global Ecology.

CNN: Extreme weather: Get ready to see more of it, scientists say