| 释义 |
phase rulen.Physics（名词）【物理学】- A rule stating that the number of degrees of freedom in a material system at equilibrium is equal to the number of components minus the number of phases plus the constant 2. For example, the system of water vapor, liquid water, and solid ice has zero degrees of freedom because the three phases of vapor, liquid, and solid coexist in the one component, water.相律：说明在平衡状态的物质体系中的自由度数量的通则，等于成分数减去相数，再加上常数2，例如，在水汽、液态水和固态冰这个体系中，自由度为零，因为气相、液相和固相三想并存于一种成分中，即水中
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