By means of the multiple-planes orthographic projection of multidimensional space, both the graphic method and graphics of the mixture problems have been given.
用多维空间的多面正投影方式，给出物料混合问题的图示、图解计算方法。
By means of the multiple-planes orthographic projection of multidimensional space, both the graphic method and graphics of the mixture problems have been given.
用多维空间的多面正投影方式，给出物料混合问题的图示、图解计算方法。
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