vector scan

the vector scan technique exploits the intrinsic charge decay mechanism of the specimen to improve imaging conditions.

矢量扫描技术是利用固有的负责试样衰变机制，以改善图像的条件。

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pattern dosage calculation method in gauss beam vector scan patterning

高斯圆束矢量扫描作图图形剂量计算方法

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The functions of vector graph edit, chart layer management, map scan have been realized with the application of MAPGIS.

开发利用MAPGIS的相关功能，实现了矢量图编辑、图层管理、浏览功能。

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The error sources of large scale scan vector digitization, which these authors consider, is basic essential object error, workers' error, rectification error of scan image, and quondam relief map error.

经过对大比例尺地形图数字化的精度分析，认为要素对象误差、作业员的作业误差、扫描图像纠正误差、原地形图的误差是地形图扫描矢量数字化的主要误差来源。

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