一般均衡归宿分析常用两部门、两要素模型。
General equilibrium incidence analysis often employs a two-sector, two-factor model.
在加伦的模型中，生殖系统中的任何要素在男女那里都是共有的，如镜子内外两面是完全相同的一样。
In Galen's model each element of the generative system is common to both women and men, a mirror image of each other.
只有在点—轴系统理论中，点、线才都是内生变量，是构建空间结构模型的不可或缺的两大要素。
Only in the pole axis theory, do the point and the line become the endogenetic variable and they form the two indispensable factors of constructing spatial structure.
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