The importance of soil organic carbon (SOC) under forests in the global carbon cycle depends on the stability of the soi......

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......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Elaeagnus angustifolia Linn. has various ecological, medicinal and economical uses. An approach was established using RP......