Secondly analyzes the environmental monitoring content, and summarizes the problems in environment monitoring, and finally puts forward some corresponding improvement measures.

其次分析了环境监测的内容，并归纳了环境监测中存在的问题，最后提出了相应的改进措施。

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According the key of safety monitoring of construction of deep pit, the monitoring content and the correlation limit alarming value is ascertained combining with the actual problem.

文章从明确深基坑施工安全监测的关键出发，确定了监测内容和相关极限报警值，用工程实例进行了阐述。

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Therefore, many developed countries (for example the US, Europe and Canada and so on) take BTEX in the atmosphere as the routine monitoring content, and has stipulated its strict air quality standard.

许多发达国家(如美国、欧洲和加拿大等)已把大气中BTEX作为常规监测内容，并规定了其空气质量标准。

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That tightened control has also allowed high-level monitoring of content.

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An article on TorrentFreak reports that PayPal is requiring private BitTorrent tracking sites to provide them free access for purposes of monitoring user content for possible copyright infringement.

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Tudou had to shut down for a day in 2008 in an apparent attempt to show censors the company was serious about monitoring its own content.

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