它的主要任务是为未来的月球考察任务做前期的准备性调查。
Its primary objective is to conduct investigations to prepare for future explorations of the moon.
完成了PC接口线路、梯形图程序及其他PC改造的初步设计，它为实现铣床的PC控制做好了前期的准备。
Completed the PC interface circuits, ladder diagram procedures and other PC transformation of the preliminary design for the realization of its PC Control milling machine made early preparations.
通过确当的途径获取缺陷图像，并对图像进行灰度变换，中值滤波对图像进行增强处理，为下一步图像的进一步的处理做前期的准备。
To obtain defect images through appropriate approach and conduct gray-level transformation, and the images are enhancement processed with median filtering, so as to get ready for further processing.
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