This paper obtains some new types by using dualistic transformation 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。

youdao

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.

在我国经济转型期存在着体制型、城乡型、行业型以及市场内生型等竞争性与垄断性并存的二元结构劳动力市场形式。

youdao