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词汇 Supercritical pressure
分类 英语词汇 英语翻译词典
释义

Supercritical pressure

中文百科

临界点 (热力学) Critical point (thermodynamics)

（重定向自Supercritical pressure）
在相图中，临界点就是液态和气态边界（蓝色线）最右上方的点
在相图中，临界点就是液态和气态边界（蓝色线）最右上方的点

在相图中，临界点就是液态和气态边界（蓝色线）最右上方的点

在热力学中，临界点是可使一物质以液态存在的最高温度或以气态存在的最高压强，当物质的温度、压强超过此界线——即临界温度及临界压强——会相变成同时拥有液态及气态特征的流体：超临界流体。

临界温度下的p-V等温线上，在临界点处的一阶、二阶导数均为零，即：

\left(\frac{\partial p}{\partial V}\right)_T = \left(\frac{\partial^2p}{\partial V^2}\right)_T = 0
英语百科

Critical point (thermodynamics) 临界点 (热力学)

（重定向自Supercritical pressure）
1. Subcritical ethane, liquid and gas phase coexist 2. Critical point (32.17 °C, 48.72 bar), opalescence 3. Supercritical ethane, fluid[1]
The liquid-vapor critical point in a pressure–temperature phase diagram is at the high-temperature extreme of the liquid–gas phase boundary. The dotted green line shows the anomalous behavior of water.
The critical isotherm with the critical point K
Carbon dioxide exuding fog while cooling from supercritical to critical temperature

In thermodynamics, a critical point (or critical state) is the end point of a phase equilibrium curve. The most prominent example is the liquid-vapor critical point, the end point of the pressure-temperature curve that designates conditions under which a liquid and its vapor can coexist. At the critical point, defined by a critical temperature Tc and a critical pressure pc, phase boundaries vanish. Other examples include the liquid–liquid critical points in mixtures.
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