在采用欧五欧六标准的时候，它的以质量为基础的颗粒物排放限额只能满足通过时封闭式微粒过滤器。
At the time of adoption of the Euro 5/6 regulation, its mass-based PM emission limits could only be met by closed particulate filters.
我们这一轻巧的设备将形成了以公众为核心的革新性服务的基础，我们也希望帮助其他城市在各自的社区行动和城市生活质量改进计划中使用这一技术。
Our Senspod technology forms the basis for innovative citizen centric services. We look forward to helping other cities use it for their own community action and urban life quality improvement plans.
世界卫生组织目前并不提倡这些做法，但是正与各国合作以促进一种以证据为基础的做法，解决安全、有效和质量问题。
WHO does not currently recommend these practices, but is working with countries to promote an evidence-based approach to addressing safety, efficacy and quality issues.
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