...界上最美好的东西 » It will be the most wonderful things in the world 取得好的成绩很难 » Difficult to obtain good results 遇到你我觉得很幸运，我英语不好，所以经常苦恼。我希望在您的带领下成绩会提高。
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When operated directly in the image, the conventional methods always difficult to obtain good results because they are poor in high dimension performance.
当直接在图像上进行操作时，传统的分类方法由于数据的高维特性表现差，很难取得较好的效果。
Because of the wind speed measurement and accurate system model are hard to obtain, so it's difficult to achieve good results by using the traditional pid controller in case of rapidly variable wind.
由于风速测量的不准确性以及很难获得风力发电系统的精确模型，故采用传统的PID控制器难以在风速快速变化的情况下实现良好的控制效果。
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