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[期刊论文] 作者：Dundun Liu,Lu Liu,Haozhong Cheng,Shenxi Zhang,Jieqing Xin,
来源：现代电力系统与清洁能源学报(英文) 年份：2021
A quasi-linear relationship between voltage angles and voltage magnitudes in power flow calculation is presented.An accurate estimation of voltage magnitudes can be provided by the quasi-linear relationship when voltage angles are derived b......
Effect of subsoil tillage depth on nutrient accumulation, root distribution, and grain yield in spri
[期刊论文] 作者：Hongguang Cai,Wei Ma,Xiuzhi Zhang,Jieqing Ping,Xiaogong Yan,Jianzhao Liu,Jingchao Yuan,
来源：城市道桥与防洪 年份：2014
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、测量监控等方面人手,介绍了S226海滨大桥...
[期刊论文] 作者：Li He,Liu Wenbing,Wang Yixi,Zhang Jieqing,Gao Ye,Kang Jian,Zhang Changxuan,,
来源：Earthquake Research in China 年份：2015
On March 6,2010,an earthquake of M L4. 5 took place in Luanxian,Hebei Province,with plenty of foreshocks and aftershocks. From December 2009 to March 2010,a ser...
Effect of subsoil tillage depth on nutrient accumulation, root distribution, and grain yield in spri
[期刊论文] 作者：Hongguang Cai,Wei Ma,Xiuzhi Zhang,Jieqing Ping,Xiaogong Yan,Jianzhao Liu,Jingchao Yuan,Lichun Wang,Jun,
来源：The Crop Journal 年份：2014
A four-year field experiment was conducted to investigate the effect of subsoiling depth on root morphology, nitrogen(N), phosphorus(P), and potassium(K) uptake...
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