南非Kalahari锰矿田内发育众多大小规模的锰矿床,其形成与早期海底热液喷气及后期沉积变质作用密切相关。通过对比研究,区内矿体分......

The Zambezi Belt in southern Africa has been regarded as a part of the 570-530 Ma Kuunga Orogen formed by a series of co......

幼儿教师的角色意识影响幼儿教育质量，也对其自身的专业发展产生影响。日本著名幼儿教育家仓桥憋三将近代欧美幼儿教育理念与儒学思......

The aim of this research was to investigate the interactions between Prosopis plants and soils in the Kalahari area, sou......

In savanna vegetation, trees and their canopies provide an important, but scattered habitat. Seeds of plants growing und......