该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

Faidherbia albida is an ideal agroforestry tree commonly intercropped with annual crops like millet and groundnuts in th......

复杂语言进化的研究主要是根据欧洲古人类学的记录。世界其他地区的资料常常作为由欧洲衍生的而被忽视或遗忘。虽然东亚、撒哈拉以......

推进因孕辍学女生返校是近年来非洲国家基础教育颇为关注的问题。以撒哈拉以南非洲国家为例,分析各国因孕辍学女生返校政策的颁布......

Health and climate have been linked since antiquity.The impact of climate change on human health has received increasing......

In this investigation the electricity generation and the electricity capacity of energy mix for sub Saharan Africa from ......