From the geometrical representation of the phase function, it is pointed out that the thermodynamic phase equilibrium diagram is in essence a projection diagram of phase function.
由相函数的几何表象得出：热力学相平衡图实质上是相函数的投影图。
2
The research status of binary and multi-component phasediagramof magnesium alloys has been analyzed and several problems existing in alloying of magnesium alloys have been pointed out.