metric differential geometry

例句：

1. 1. This metric differentialgeometry model is widely used in engineeringdesign.
   这个度量学微分几何模型在工程设计中被广泛使用。
2. 2. The researchon metric differential geometry has made significantprogress in recent years.
   近年来，度量学微分几何的研究取得了显著进展。
3. 3. In metric differentialgeometry, we can study theproperties of curves and surfaces.
   在度量学微分几何中，我们可以研究曲线和曲面的性质。