This paper introduces the sample methods, testing point selection, testing procedures and results processing of portable gas detector applied in the confined space in the petrochemical company.

介绍了便携式气体检测报警仪用于石油化工企业中有限空间的气体检测时的采样方法、检测点选择、检测工作程序以及检测结果的处理。

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Graph-based learning is a very active direction of semi-supervised learning in recent years. It describes the sample space by graph, and USES neighbors to spread label information in point cloud.

基于图的学习是近几年来半监督学习中一个相当活跃的方向，它用图来描述样本空间，利用近邻点的位置来控制标记信息的传播。

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