根据相律导出紧邻相区内不同相的总相数Φ及其相边界的维数R_1的对应关系定理和它的六条推论。应用这个定理及其推论,可导出相图原理中的边界法则和相区接触法则,可阐明由简单相图单元构成复杂三元相图所必须遵循的十条经验规则,亦可说明一、二、三、四元相图中紧邻相区及其边界的相互关系,以及其他应用。 According to the law of phase, the corresponding relation theorem and its six corollaries of the total number of phases Φ and the phase dimension R_1 of the adjacent phases within the phase region are derived. Applying this theorem and its corollary, we can derive boundary rules and phase contact rules in the phase diagram principle, which can clarify the ten rules of thumb that must be followed when composing simple ternary phase diagrams from simple phase diagram units. It also shows that one, two, Third, quaternary phase diagram in the immediate vicinity of the phase and its relationship between the boundaries, and other applications.