“geographical exploration in Africa”的概念、定义、翻译、参考文献-科学参考

单词	geographical exploration in Africa
释义	geographical exploration in Africa Encyclopedia 历史学〔总论〕释 geographical exploration in Africa非洲地理考察近代欧美国家政府或企业主持或资助的对非洲大陆的探察活动。始于18世纪下半叶，基本结束于19世纪末。主要代表为J.H.斯皮克、M.帕克、D.利文斯敦、H.M.斯坦利等。考察活动扩大和加深了对热带非洲的了解，但也为列强瓜分非洲开辟了道路。
随便看	powder insulation powder jet deep mixing reinforcement machine powder metallurgical gear powder metallurgy powder metallurgy alloys for electrical applications powder metallurgy alloy steels powder metallurgy aluminium alloy powder metallurgy aluminum alloys powder metallurgy anti-friction materials powder metallurgy bearing powder metallurgy composites powder metallurgy copper alloys powder metallurgy friction materials powder metallurgy iron-based products powder metallurgy magnetic materials powder metallurgy material powder metallurgy materials with surper-fine crystalline structure powder metallurgy mechanical parts powder metallurgy of metal matrix composites powder metallurgy porous materials powder metallurgy refractory metal materials powder-metallurgy sand screen powder metallurgy science powder metallurgy superalloy powder metallurgy superalloys

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