This paper obtains some new types by using dualistictransformation and generalized transformation of axis, the projections in straight line for earth pole.
对于地球极表象为直线的投影，本文运用对偶变换和广义轴位变换，得出了它们的几种新款式。
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During the transformation period, there is a labor market form of dualistic structure, i. e. rivalrousness and monopoly coexist in market system, cities and towns, industries, market endogeny.