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Comparing with existing solutions, new method can utilize generators' speed signal measured by wide area measurement systems directly and detailed model and parameter of power system components were not needed. After sphering measurement-data, ICA with maximal negentropy criterion was carried out to obtain feature matrix. By this means high-dimension data of multi-machine perturbed trajectories were reduced to lower dimensions, and coherent generator groups were identified by pattern recognition consequently. Simulation results of 36-bus system with 8-generator and planning northwest China 750 kV power grid show that noise signals and bad data can be eliminated. This method is accurate in identifying coherent generator groups.

与现有方法相比，这种方法不需要获得系统元件模型和参数，而是直接球化广域测量系统(wide area measurement systems，WAMS)提供的发电机电角速度信号，再利用最大负熵准则进行独立分量分析得到特征矩阵，将高维数的多机受扰轨迹数据变换到低维空间，通过模式识别得到分群结果。8机36节点系统和西北750 kV电网规划系统算例表明，该方法能有效消除噪音和坏数据的影响，准确识别出同调机群。

The door to the human lift between two spoked passages in the northwest arc of the hub swung open.

中心西南角弧度上两个轮轴形通道之间人坐的电梯门转着打开了。

Whether pairing marriage has completely suppled group marriage in America today is a question to be decided by closer investigation among the peoples still at the upper stage of savagery in the northwest , and particularly in South America .

要弄清现在美洲的群婚是否已完全被对偶婚所排除的问题，必须更加仔细地研究一下还处于蒙昧时代高级阶段的西北部民族，特别是南美的各民族。

The Kashmiri style in this phase has two different versions, Type BI, represented by Tholing northwest stupa and Type BII, represented by Tholing northeast sutpa.

这两种不同版本的克什米尔艺术风格之间不存在年代的相对早晚关系，但均对后期的绘画产生了重要影响。

A smear of red in a desert of pale ice, the Canadian Coast Guard icebreaker Labrador trudges through the frozen landscape of the Arctic Ocean in Canada''s Northwest Territories.

意译：一艘涂上红色的破冰船是加拿大海岸警卫队的破冰船跋涉通过结冰的北极样的加拿大西北部地域。

A smear of red in a desert of pale ice, the Canadian Coast Guard icebreaker Labrador trudges through the frozen landscape of the Arctic Ocean in Canada's Northwest Territories.

苍白冰漠中的一抹红色，图中为在加拿大西北的北冰洋领海中艰苦前进的加拿大海岸巡逻队的破冰船拉布拉多号。

This study was to explore universalities of these factors in Wuwei, a city in northwest China with high incidence of gastric cancer, and provide evidences for the first-prevention of gastric cancer.

本研究旨在探讨这些因素在我国西北部胃癌高发区－武威市的普遍性，给胃癌一级预防提供病因线索。

There are the uneven said manufacturers distributed over China, before 1990s, the makers were located in Beijing or the surrounding areas, it was developing quickly in northeast and northwest areas and their applications were also wider than other areas; after the later period in 1990, the upsurges were found in Shandong and Guangdong and encouragingly developed in Shanghai, Jiangsu and Zhejiang.

我国加气混凝土生产企业的分布很不均匀。上世纪90年代前，以北京及周边地区、东北地区和西北地区发展较快，应用也比其他地区广泛；到了90年代后期，先是在山东和广东掀起了一个发展的高潮，后在上海及江苏、浙江得到了极大的发展。

Finally, the porosity and permeability wades, pore types, pore texture types and reservoir rocks are used to evaluate the Jurassic reservoir of the northwest edge in Junggar Basin.

最后，结合孔渗性能级别、储集空间类型、孔隙结构类型、岩性等特徵，对准噶尔盆地西北缘侏罗系储层进行了综合分类评价。

The snapshot was taken from Alexandria, Virginia, some 100 miles northwest of Wallops Island.

这张照片拍摄地点在维吉尼亚州的Alexandria，大约在Wallops岛西北方160公里之处。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。