chorologic unit

Borszczowia aralocaspica is an endemic species in the Central Asian deserts,with utricles and perianth coating the fruit and healing into berry-like dispersal units.

异子蓬为中亚荒漠的特有种,其果实为胞果,花被片在结果时宿存包被果实形成浆果状的散布单位。

In this paper a distributed unit hydrograph model was built on the basis of GIS and applied in Jiangwan catchment.

重点探讨在GIS支持下建立分布式单位线模型的方法和途径。