It is proved strictly that this incommensurate phase transition is of second order.
严格证明了该非公度相变是第二类的。
We introduce a diffusion-ZGB model including the diffusion of o and co for the surface catalytic reaction of O2 and co, and eliminate the second-order phase transition naturally.
对于O_2和CO的表面催化反应，我们引入了一个包括O和CO的扩散的不可逆zgb扩散模型，非常自然地消除了二级相变点。
Above the critical point, the second-order phase-transition line between the superfluid and the normal phase is determined.
在三相点温度以上，超流和正常相之间有二级相变。
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