In the methods mentioned above, features are extracted in range subspace of samples.
以上这些特征提取方法都是在样本的值空间进行特征提取。
The validity of the methods mentioned above had been testified by the marine experiments.
经过海洋探测试验，验证了上述方法的有效性。
The test system of the Three Gorges left powerhouse is studied using the theories and methods mentioned above.
应用前述的理论和方法，对三峡左岸电站厂房动态测试系统进行了研究；
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