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五、监测系统在信息收集中的优势由分层抽取的145个监测点组成的监测系统,是在一个相对小的监测范围同时收集这些信息,故分母相同,便于比较;综合
V. ADVANTAGES OF THE MONITORING SYSTEM IN INFORMATION COLLECTION Monitoring system consisting of 145 monitoring points drawn in layers collects these information in a relatively small monitoring scope at the same time so that the denominator is the same for comparison purposes.