Can also be widely used in motor vehicle exhaust pollution analysis of continuous testing, engine emission analysis studies.

也可广泛应用于机动车排气污染分析连续检测、发动机排放分析研究等。

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Even accounting for the new analysis, natural gas-which also emits less toxic and particulate pollution-offers a significant environmental advantage.

即便如此，天然气仍然以有毒物质少、颗粒污染物少的特征而具备显著的环境优势。

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And may to the hydraulic oil pollution of quantitative analysis and evaluation, do online testing and failure prevention.

而且可对液压油进行定量的污染分析和评价，做到在线检测和故障预防。

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The 2011 study offers an intensive analysis of air pollution in more than 900 counties and more than 200 Metropolitan Statistical Areas (MSA) and Combined Statistical Areas (CSA), or cities and their surrounding suburbs.

FORBES: List: America's Most Polluted Cities

An analysis by the miners' union says the proposal, along with others targeting coal-related pollution, could put at risk as many as 250, 000 jobs.

WSJ: EPA Tangles With New Critic: Labor