In the research of image processing, this paper clears away noises to lift the image clarity aimed at the noise arisen in engineering drawing by means of mean filtering and medium filtering etc.
图像处理方面，针对工程图纸图像中出现的噪声类型，本文采用均值滤波和中值滤波等方法消除噪声，提高了图像的清晰度。
The enforcement of new curriculum is changing the traditional concepts of knowledge, student, learning, and thus clears up teachers' image of knowledge, text explanation, and legal authority.
新课程的实施正在使传统的知识观、学生观、学习观以及师生关系发生深刻的变化，从而消解了传统教学中的教师知识权威、文本解释权威和法定权威的形象。
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