两能级原子置于噪声场中，噪声场用热库态描述。

A two-level atom is put in noise field, which is described as thermal reservoir.

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用多模相干态描述光场，应用预解算符和投影算符推导演化算符，使本方法可统一处理锁模激光脉冲序列输出及原子的共振多光子过程。

This method can be used to describe the resonant multi-photon processes that the pulse train from the mode locked laser interacting with atoms.

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同时对淡水室树脂层态进行了分析，详细描述EDI脱盐工艺中的离子迁移行为。

Meanwhile, the form of the resin layer in the fresh water compartment is analyzed, with a detailed description made of the ion migration behavior in the EDI demineralization process.

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So, these on-changing properties that describe the state of the equilibrium state of the system are called state variables.

这些描述,系统平衡态的,变化的属性,就叫做状态变量。

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Now we want to show a notation, how do we go from one equilibrium state like this describes to another equilibrium state?

现在我们要展示一种记号，来标记）我们如何,从这里描述的,这样的一个平衡态过渡到另一个平衡态？

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And resonance is the idea that sometimes one single Lewis structure does not adequately describe the electron configuration around a given molecule, so instead you need to draw two different Lewis structures to describe that more appropriately.

而所谓共振态,就是有时候一个路易斯结构不足以,完整描述一个给定分子的电子排布，因此这时你需要同时画出两个,不同的路易斯结构来描述它,这样会更恰当。

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