For smaller clusters, there is no clear characteristic of first-orderphasetransition during the melting, implying a coexistence of solid and liquid phases due to finite-size effect.
对于较小的团簇，融化曲线没有出现清楚的一级相变特征，意味着由于尺寸效应导致的固态液态共存。
2
They discovered a firstorderphasetransition, a discontinuity, in liquid hydrogen between a molecular state with low conductivity and a highly conductive atomic state.
他们发现了一个不连续的一级相变，这个相变是在液态氢低电导率的分子态和高电导率的原子态之间。
3
The results show that the laser process in different conditions possesses the characteristics of the firstorder or the second order phasetransition. Laser is a typical non-equilibrium phenomenon.