special objects的用法和样例：
例句
- In pattern recognition and in image processing, Feature extraction is a special form of dimensionality reduction.
在模式识别和图像处理领域中，特征提取是一种特殊的维数降阶的形式。 - Finally, the extended MCTS EMD is used to extract the feature signal of a special vehicle and it is in agreement with the analysis result.
最后将它应用到实际某特种车辆振动信号的特征提取中，得到了满意的结果。
